Curated Self Study Guide for Computer Science and DevOps/SRE/SysAdmin

An always updated copy of this document can be found at http://Learn.SharjeelSayed.com
Fork this at https://github.com/SharjeelSayed/SharjeelSayed.github.io
Reach me at http://SharjeelSayed.com

Contents:

Computer Science:
Programming Concepts
Computer Architecture
Algorithms and Data Structures
Mathematics for Computer Science
Operating Systems Concepts
Networking
Database Concepts

DevOps/SRE/SysAdmin:
Linux
Bash
macOS
Windows
Powershell
Storage
Docker
Kubernetes
VMware
OpenStack
Data Center
AWS
NginX
Apache
IIS
HAProxy
Memcached
djbdns
SQL
MySQL
SQL Server
PostgreSQL
Redis
Ansible
Puppet
Python
C
Java
Web Development
Node.js
Tomcat
Regex
Git
Vim
ELK
Security
Hardware
Microsoft Excel
Electronics
Science
Design
Machine Learning

Career:
Interview Guides
Resume Improvement
Job Portals
Job Search Engines
Company and Salary Reviews
Freelancer
Management
Money
Foreign Language

Study Tools:
Ebooks
MOOC
News
Podcasts
Ambient Music
Headphones
Ear Plugs
Backup

Computer Science:

Sources:
http://blog.agupieware.com/2014/06/online-learning-intensive-bachelors.html
http://cdn.cs50.net/guide/guide-15.pdf (Unofficial Guide to CS at Harvard)
http://matt.might.net/articles/what-cs-majors-should-know
https://begriffs.com/posts/2017-04-13-longterm-computing-reading.html
https://en.wikipedia.org/wiki/Outline_of_computer_science
https://github.com/Developer-Y/cs-video-courses
https://github.com/mvillaloboz/open-source-cs-degree
https://github.com/nushackers/notes-to-cs-freshmen-from-the-future
https://github.com/open-source-society/computer-science
https://github.com/prakhar1989/awesome-courses
https://github.com/topics/computer-science?o=desc&s=stars
https://learn-anything.xyz/computer-science
https://medium.freecodecamp.org/640-free-online-programming-computer-science-courses-you-can-start-in-september-f0bd3a184625
https://news.ycombinator.com/item?id=13014900 (Ask HN: What are the bibles of Computer Science?)
https://news.ycombinator.com/item?id=13406638 (Ask HN: What's the best computer science book you've read recently?)
https://news.ycombinator.com/item?id=13862284 (Teach Yourself Computer Science)
https://news.ycombinator.com/item?id=15018002 (Ask HN: Is Georgia Tech's Online Master in CS Worth It?)
https://news.ycombinator.com/item?id=15089476 (Ask HN: What is your favorite CS paper?)
https://news.ycombinator.com/item?id=15695326 (Ask HN: What are some interesting papers in CS for a beginner?)
https://news.ycombinator.com/item?id=15898263 (A computer science study plan)
https://news.ycombinator.com/item?id=15899383 (	Ask HN: Fully online CS degrees?)
https://news.ycombinator.com/item?id=16591918 (Ask HN: “Write your own” or “Build your own” software projects)
https://news.ycombinator.com/item?id=17031609 (Ask HN: Books you should have read when you start a career in SE / CS?)
https://news.ycombinator.com/item?id=18890417 (If not SICP, then what? Maybe HTDP?)
https://news.ycombinator.com/item?id=20729252 (Ask HN: What book to read to get a footing in CS theory?)
https://news.ycombinator.com/item?id=5019373 (How Harvard's CS50 Renewed My Hope For Online Education)
https://ocw.mit.edu/courses/find-by-topic/#cat=engineering&subcat=computerscience
https://spin.atomicobject.com/2015/05/15/obtaining-thorough-cs-background-online
https://techdevguide.withgoogle.com
https://www.amazon.com/Best-Sellers-Books-Computer-Science/zgbs/books/468204
https://www.google.com/about/careers/students/guide-to-technical-development.html
https://www.reddit.com/r/compsci/comments/20vbaw/what_book_made_you_a_better_computer_scientist
https://www.reddit.com/r/compsci/comments/40mq3q/what_are_the_canon_books_in_computer_science
https://www.reddit.com/r/compsci/comments/7s63d6/are_there_cs_related_podcast_to_listen_to
https://www.reddit.com/r/cscareerquestions/comments/5bsg82/whats_the_single_most_useful_csrelated_link_you
https://www.reddit.com/r/cscareerquestions/comments/92yuvw/what_parts_of_a_cs_degree_have_been_most_useful
https://www.reddit.com/r/learnprogramming/comments/69x0bp/teach_yourself_computer_science
https://www.reddit.com/r/learnprogramming/comments/764cs8/trello_board_for_teach_yourself_computer_science
https://www.reddit.com/r/learnprogramming/comments/ani7nb/psa_many_of_berkeleys_courses_have_lectures_and
https://www.scotthyoung.com/blog/myprojects/mit-challenge-2
https://pinboard.in/u:sharjeelsayed/t:cs

Teach Yourself Computer Science
https://teachyourselfcs.com

Path to a free self-taught education in Computer Science!
https://github.com/ossu/computer-science

Structure and Interpretation of Computer Programs - 2nd Edition
http://inst.eecs.berkeley.edu/~cs61a/fa16 (Instructor: John DeNero)
http://inst.eecs.berkeley.edu/~cs61a/sp17
http://sarabander.github.io/sicp
http://www.composingprograms.com
https://cs61a.org
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-001-structure-and-interpretation-of-computer-programs-spring-2005/index.htm
https://www.youtube.com/playlist?list=PL7BcsI5ueSNFPCEisbaoQ0kXIDX9rR5FF
https://www.youtube.com/playlist?list=PLE18841CABEA24090
https://xuanji.appspot.com/isicp
https://mitpress.mit.edu/sites/default/files/sicp/index.html

Computer Science 61A, UCBerkeley 001 - Spring 2011
https://archive.org/details/ucberkeley-webcast-PL3E89002AA9B9879E?sort=titleSorter

Programming Concepts:

Sources:
http://stackoverflow.com/questions/1711/what-is-the-single-most-influential-book-every-programmer-should-read
https://blog.codinghorror.com/recommended-reading-for-developers
https://docs.google.com/spreadsheets/d/1gIRjeB1Y_AMvtmJsZWl_dNMDJ7lPSIxiVUYyEvrP5P4/htmlview?usp=sharing&sle=true (Popular Programming Podcast episodes)
https://github.com/AlgoryL/Projects-from-Scratch
https://github.com/bnb/awesome-developer-streams
https://github.com/braydie/HowToBeAProgrammer
https://github.com/danistefanovic/build-your-own-x
https://github.com/EbookFoundation/free-programming-books
https://github.com/kamranahmedse/developer-roadmap
https://github.com/LeCoupa/awesome-cheatsheets
https://github.com/Michael0x2a/curated-programming-resources
https://github.com/mtdvio/every-programmer-should-know
https://github.com/P1xt/p1xt-guides
https://github.com/rby90/Project-Based-Tutorials-in-C
https://github.com/rShetty/awesome-podcasts
https://github.com/sdmg15/Best-websites-a-programmer-should-visit
https://github.com/stanzhai/be-a-professional-programmer
https://github.com/styfle/awesome-online-ide
https://github.com/topics/programming?o=desc&s=stars
https://github.com/tuvtran/project-based-learning
https://insights.stackoverflow.com/survey/2018
https://learnxinyminutes.com
https://news.ycombinator.com/item?id=11465234 (Composing Programs – Python 3 in the tradition of SICP)
https://news.ycombinator.com/item?id=12702651 (Ask HN: What is your favorite YouTube channel for developers?)
https://news.ycombinator.com/item?id=12718102 (Programming books you might want to consider reading)
https://news.ycombinator.com/item?id=13597949 (The most mentioned books on Stack Overflow)
https://news.ycombinator.com/item?id=13918465 (Beautiful Online SICP)
https://news.ycombinator.com/item?id=14169760 (Resources on creating programming languages)
https://news.ycombinator.com/item?id=14486657 (Ask HN: What language-agnostic programming books should I read?)
https://news.ycombinator.com/item?id=14627137 (CS61A Structure and Interpretation of Computer Programs)
https://news.ycombinator.com/item?id=14708350 (Ask HN: What habits make a programmer great?)
https://news.ycombinator.com/item?id=14825811 (More Good Programming Quotes (2016))
https://news.ycombinator.com/item?id=14841939 (Ask HN: What books had the greatest effect on how you structure your code?)
https://news.ycombinator.com/item?id=14842276 (Ask HN: What programming blogs do you follow?)
https://news.ycombinator.com/item?id=15154903 (Ask HN: What are your favourite developer blogs?)
https://news.ycombinator.com/item?id=15157651 (YouTube Programming Channels)
https://news.ycombinator.com/item?id=15733745 (Ask HN: How do you read programming books?)
https://news.ycombinator.com/item?id=15739877 (Stanford Compilers Course (stanford.edu)
https://news.ycombinator.com/item?id=15826781 (Ask HN: What coding challenge sites should I try next?)
https://news.ycombinator.com/item?id=15828935 (Reddit's favorite programming books, from 3.5B comments)
https://news.ycombinator.com/item?id=16346319 (Ask HN: How would you relearn programming?)
https://news.ycombinator.com/item?id=16535886 (Ask HN: Best way to learn modern C++?)
https://news.ycombinator.com/item?id=16952222 (Competitive Programmer's Handbook (2017) [pdf] (cses.fi))
https://news.ycombinator.com/item?id=17390527 (DevTube: Searchable index of developer videos (dev.tube))
https://news.ycombinator.com/item?id=17651797 (Composing Programs – An introduction to programming in the tradition of SICP)
https://news.ycombinator.com/item?id=17666133 (Paul Graham on SICP (2000))
https://news.ycombinator.com/item?id=17965917 (Ask HN: What's a starting point for learning how to write programming languages?)
https://news.ycombinator.com/item?id=18046722 (What are some things that only someone who has been programming 20 years knows? (quora.com))
https://news.ycombinator.com/item?id=18128477 (Ask HN: What is your best advice for a junior software developer?)
https://news.ycombinator.com/item?id=18422000 (Ask HN: Where to find someone to review my code?)
https://news.ycombinator.com/item?id=18961793 (Ask HN: What are must-know concepts for back end development?)
https://news.ycombinator.com/item?id=20556336 (Ask HN: What are the “best” codebases that you've encountered?)
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-01sc-introduction-to-electrical-engineering-and-computer-science-i-spring-2011/index.htm
https://softwareengineeringdaily.com
https://www.microsoft.com/en-us/research/blog/category/podcast
https://www.reddit.com/r/compsci+cscareerquestions+learnprogramming+programming
https://www.reddit.com/r/cscareerquestions/comments/6hmlxr/what_are_the_most_indemand_software_skills_right/dizqiie
https://www.reddit.com/r/cscareerquestions/comments/6w4dej/what_books_should_every_software_engineer_read_to
https://www.reddit.com/r/learnprogramming/comments/6l5u8s/what_one_thing_improved_your_skills_the_most
https://www.reddit.com/r/learnprogramming/comments/6lvvqq/audiobooks_on_programming
https://www.reddit.com/r/learnprogramming/comments/75qwen/im_34_and_i_got_my_first_programming_job_after
https://www.reddit.com/r/learnprogramming/comments/89pcz9/what_programming_podcasts_if_any_do_you_listen_to
https://www.reddit.com/r/learnprogramming/comments/8h1tzj/beginner_programmer_podcasts
https://www.reddit.com/r/learnprogramming/comments/ajijri/good_youtube_channels_for_learning_how_to_code
https://www.reddit.com/r/learnprogramming/top
https://www.reddit.com/r/learnprogramming/wiki/books
https://www.reddit.com/r/learnprogramming/wiki/faq
https://www.reddit.com/r/learnprogramming/wiki/online
https://www.reddit.com/r/programming/comments/6l689j/a_manually_curated_list_of_240_popular
https://www.theodinproject.com
https://www.udacity.com/course/intro-to-computer-science--cs101

CS50 Introduction to Computer Science , Harvard University
https://www.edx.org/course/introduction-computer-science-harvardx-cs50x

Introduction to Computer Science and Programming Using Python , MIT
https://www.edx.org/course/introduction-computer-science-mitx-6-00-1x-11

How to Design Programs, Second Edition
http://www.htdp.org/2018-01-06/Book

Coding Games and Programming Challenges to Code Better
https://www.codingame.com

Computer Architecture:

Sources:
https://news.ycombinator.com/item?id=14526344 (Build a Modern Computer from First Principles: Nand to Tetris Part II)

The Elements of Computing Systems: Building a Modern Computer from First Principles
https://www.amazon.com/Elements-Computing-Systems-Building-Principles/dp/0262640686
http://www.nand2tetris.org

Computer Organization and Design MIPS Edition, Fifth Edition
https://www.amazon.com/gp/product/0124077269

Computer Science 61C, UCBerkeley 001 - Spring 2015
https://archive.org/details/ucberkeley-webcast-PL-XXv-cvA_iCl2-D-FS5mk0jFF6cYSJs_?sort=titleSorter

Computation Structures | Electrical Engineering and Computer Science | MIT OpenCourseWare
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-004-computation-structures-spring-2009

Additional:

Modern Microprocessors A 90-Minute Guide! A brief, pulls-no-punches, fast-paced introduction to the main design aspects of modern processor microarchitecture
http://www.lighterra.com/papers/modernmicroprocessors

Computer Architecture, Fifth Edition: A Quantitative Approach (The Morgan Kaufmann Series in Computer Architecture and Design) 5th Edition
https://www.amazon.com/Computer-Architecture-Fifth-Quantitative-Approach/dp/012383872X

Algorithms and Data Structures:

Sources:
https://github.com/karan/Projects
https://news.ycombinator.com/item?id=13653669 (Algorithms (khanacademy.org))
https://news.ycombinator.com/item?id=15423045 (A Comparison of Four Algorithms Textbooks (2016))
https://news.ycombinator.com/item?id=16428309 (Ask HN: What's the best algorithms and data structures online course?)
https://news.ycombinator.com/item?id=17079197 (Algorithms Behind Modern Storage Systems)
https://news.ycombinator.com/item?id=18805624 (Algorithms, by Jeff Erickson (illinois.edu))
https://projecteuler.net
https://www.reddit.com/r/algorithms
https://www.reddit.com/r/compsci/comments/1kcal2/algorithims_everyone_should_know
https://www.reddit.com/r/cscareerquestions/comments/ap8jz3/which_data_structures_and_algorithms_are
https://www.reddit.com/r/learnprogramming/comments/379vwn/visually_learning_algorithms

The Algorithm Design Manual 2nd Edition
https://www.amazon.com/gp/product/1848000693

Steven Skiena Dept. of Computer Science Stony Brook University Video Lectures
http://www3.cs.stonybrook.edu/~algorith/video-lectures

Algorithms by S. Dasgupta, C. H. Papadimitriou, and U. V. Vazirani
http://algorithmics.lsi.upc.edu/docs/Dasgupta-Papadimitriou-Vazirani.pdf

Additional Material:

Introduction to Algorithms, 3rd Edition
https://www.amazon.com/Introduction-Algorithms-3rd-MIT-Press/dp/0262033844

Algorithms by Jeff Erickson
http://jeffe.cs.illinois.edu/teaching/algorithms

Mathematics for Computer Science:

Sources:
https://news.ycombinator.com/item?id=13800320 (	Mathematics for Computer Science [pdf] (mit.edu))
https://news.ycombinator.com/item?id=14161876 (Calculus Made Easy (1914))
https://news.ycombinator.com/item?id=14581273 (Georgia Tech's free math textbook collective)
https://news.ycombinator.com/item?id=16392698 (How to Study Mathematics (2017) (uh.edu))
https://news.ycombinator.com/item?id=16562173 (Ask HN: How to self-learn math?)
https://news.ycombinator.com/item?id=19178593 (Classic Mathematics Books for Lifelong Learners )
https://news.ycombinator.com/item?id=20048205 (Mathematics all-in-one cheat-sheet (2013) [pdf])
https://www.reddit.com/r/learnprogramming/comments/70rh9q/is_there_a_cs50_for_math
https://www.youtube.com/channel/UCYO_jab_esuFRV4b17AJtAw (3Blue1Brown Channel)

Lecture notes by László Lovász
http://www.cs.elte.hu/~lovasz/dmbook.ps

Mathematics for Computer Science , MIT
https://courses.csail.mit.edu/6.042/spring17/mcs.pdf
https://www.youtube.com/playlist?list=PLUl4u3cNGP60UlabZBeeqOuoLuj_KNphQ (MIT 6.042J Mathematics for Computer Science, Spring 2015 YouTube)

Essence of linear algebra
https://www.youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2xVFitgF8hE_ab

Introduction to Linear Algebra, Fifth Edition
https://www.amazon.com/Introduction-Linear-Algebra-Gilbert-Strang/dp/0980232775

Operating Systems Concepts:

Sources:
https://news.ycombinator.com/item?id=10182727 (Operating Systems: Three Easy Pieces (wisc.edu))
https://news.ycombinator.com/item?id=18023062 (How to create an OS from scratch – tutorial (github.com))
https://news.ycombinator.com/item?id=18448942 (A book list for OS kernel developers and device driver writers (2006) (jdebp.eu))

Operating Systems: Three Easy Pieces
http://pages.cs.wisc.edu/~remzi/OSTEP
http://pages.cs.wisc.edu/~remzi/Classes/537/Spring2018/Discussion/videos.html (Video Course based on the book by CS 537 at Wisconsin with Remzi)

Computer Science 162, 001 - Spring 2015. Operating Systems and System Programming - John Kubiatowicz UCBerkeley
https://archive.org/details/ComputerScience162001Spring2012

Additional Material:

Operating System Concepts , 9th Edition
https://www.amazon.com/dp/1118063333

Modern Operating Systems , 4th Edition
https://www.amazon.com/dp/013359162X

Networking :

Sources:
https://github.com/mininet/mininet/wiki/Teaching-and-Learning-with-Mininet
https://github.com/saminiir/level-ip
https://news.ycombinator.com/item?id=13983212 (Beej's Guide to Network Programming)
https://news.ycombinator.com/item?id=14701199 (Let's Code a TCP/IP Stack: TCP Retransmission (saminiir.com))
https://www.reddit.com/r/ccna/wiki/faqs/materials
https://www.reddit.com/r/ccna/wiki
https://www.reddit.com/r/networking/wiki
https://www.reddit.com/r/sysadmin/comments/4ux166/do_you_know_a_site_to_learn_more_about_networking

Computer Networking: A Top-Down Approach (7th Edition)
https://www.amazon.com/Computer-Networking-Top-Down-Approach-7th/dp/0133594149
http://www-net.cs.umass.edu/wireshark-labs (Supplements: Wireshark Labs)

CS144 Introduction to Computer Networking Stanford University
https://suclass.stanford.edu/courses/course-v1:Engineering+CS144+Fall2016/courseware/ac9d1eef5aaa4bb5bcfe4d42f51f0f5b/c5c384e648cf404c837d05497c6e36b0

High Performance Browser Networking
https://hpbn.co

Beej's Guide to Network Programming
http://beej.us/guide/bgnet

Unix Network Programming, Volume 1: The Sockets Networking API (3rd Edition)
https://www.amazon.com/Unix-Network-Programming-Sockets-Networking/dp/0131411551

Additional Material:

CCNA Routing and Switching 200-125 Official Cert Guide Library
https://www.amazon.com/Routing-Switching-200-125-Official-Library/dp/1587205815

CBT Nuggets by Jeremey Cioara
https://www.cbtnuggets.com/it-training/cisco-ccna-icnd1-100-105
https://www.cbtnuggets.com/it-training/icnd2-200-105

Eli The Computer Guy
https://www.youtube.com/playlist?list=PLF360ED1082F6F2A5

Load Balancing Servers, Firewalls, and Caches
http://www.amazon.com/Load-Balancing-Servers-Firewalls-Caches/dp/0471415502

Professor Messer - Seven Second Subnetting
https://youtu.be/ZxAwQB8TZsM

Database Concepts:

Sources:
https://github.com/binhnguyennus/awesome-scalability
https://news.ycombinator.com/item?id=13417326 (Ask HN: What is the best online resource to learn advanced SQL?)
https://pinboard.in/u:sharjeelsayed/t:db

Architecture of a Database System
http://db.cs.berkeley.edu/papers/fntdb07-architecture.pdf

Readings in Database Systems
http://www.redbook.io

Computer Science 186, 001 - Spring 2015 UCBerkeley Introduction to Database Systems - Joseph Hellerstein
https://archive.org/details/UCBerkeley_Course_Computer_Science_186

Stanford's Databases MOOC
https://cs.stanford.edu/people/widom/DB-mooc.html

Database Design by Caleb Curry
https://www.youtube.com/playlist?list=PL_c9BZzLwBRK0Pc28IdvPQizD2mJlgoID

Database Design for Mere Mortals: A Hands-On Guide to Relational Database Design (3rd Edition)
https://www.amazon.com/Database-Design-Mere-Mortals-Hands/dp/0321884493

Designing Data-Intensive Applications: The Big Ideas Behind Reliable, Scalable, and Maintainable Systems
https://www.amazon.com/Designing-Data-Intensive-Applications-Reliable-Maintainable-ebook/dp/B06XPJML5D

DevOps/SRE/SysAdmin:

Sources:
http://findlectures.com/?p=1&class1=Technology&category_l2_Technology=-DevOps
http://serverfault.com/questions/1046/what-is-the-single-most-influential-book-every-sysadmin-should-read
https://github.com/AcalephStorage/awesome-devops
https://github.com/dastergon/awesome-sre
https://github.com/kahun/awesome-sysadmin
https://github.com/Kickball/awesome-selfhosted
https://github.com/Leo-G/DevopsWiki
https://github.com/n1trux/awesome-sysadmin
https://github.com/theanalyst/awesome-distributed-systems
https://github.com/topics/architecture?o=desc&s=stars
https://github.com/topics/devops?o=desc&s=stars
https://github.com/topics/sre?o=desc&s=stars
https://github.com/topics/sysadmin?o=desc&s=stars
https://github.com/trimstray/the-book-of-secret-knowledge
https://learn-anything.xyz/programming/software-development/devops
https://news.ycombinator.com/item?id=14153545 (What Is ‘Site Reliability Engineering’?)
https://news.ycombinator.com/item?id=14652993 (Ask HN: DevOps learning resources)
https://news.ycombinator.com/item?id=16357368 (Ask HN: Which books describe modern devops?)
https://www.bookadvice.co/sysadmin.html
https://www.reddit.com/r/compsci+cscareerquestions+learnprogramming+linux+linuxadmin+netsec+networking+programming+sysadmin
https://www.reddit.com/r/homelab/wiki/software
https://www.reddit.com/r/linuxadmin/comments/65vb8s/advice_if_you_are_wanting_to_go_into_devops
https://www.reddit.com/r/sysadmin/comments/65u70f/sysadmins_what_are_some_good_it_youtube_channels
https://www.reddit.com/r/sysadmin/wiki

Linux:

Sources:
http://stackoverflow.com/questions/236838/what-are-good-linuxunix-books-for-an-advancing-user
https://github.com/0xAX/linux-insides
https://github.com/luong-komorebi/Awesome-Linux-Software
https://github.com/topics/linux?o=desc&s=stars
https://news.ycombinator.com/item?id=3257393 (What's the one Linux command you wish you knew years ago?)
https://www.digitalocean.com/community/tutorials?primary_filter=popular
https://www.reddit.com/r/linuxadmin/comments/2s924h/how_did_you_get_your_start/cnnw1ma
https://www.reddit.com/r/linuxadmin/comments/7cw116/favorite_posts_youve_bookmarked_or_saved

UNIX and Linux System Administration Handbook (5th Edition)
https://www.amazon.com/UNIX-Linux-System-Administration-Handbook/dp/0134277554

How Linux Works: What Every Superuser Should Know, Second Edition
http://www.amazon.com/How-Linux-Works-Superuser-Should/dp/1593275676

RHCSA/RHCE Red Hat Linux Certification Study Guide, Seventh Edition (Exams EX200 & EX300)
https://www.amazon.com/RHCSA-Linux-Certification-Study-Seventh/dp/0071841962

Additional Material:

Linux From Scratch!
http://www.linuxfromscratch.org

Build yourself a Linux
https://github.com/MichielDerhaeg/build-linux

The Linux Programming Interface: A Linux and UNIX System Programming Handbook
https://www.amazon.com/Linux-Programming-Interface-System-Handbook/dp/1593272200

Unix Power Tools,Third Edition
http://www.amazon.com/Power-Tools-Third-Shelley-Powers/dp/0596003307

Linux Journey
https://linuxjourney.com

FreeBSD:

Sources:
https://www.freebsd.org/docs/books.html
https://hn.algolia.com/?query=freebsd&sort=byPopularity&prefix=false&page=0&dateRange=all&type=story

FreeBSD Quickstart Guide for Linux Users
https://www.freebsd.org/doc/en/articles/linux-users

FreeBSD Handbook
https://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook

The Design and Implementation of the FreeBSD Operating System (2nd Edition)
https://www.amazon.com/Design-Implementation-FreeBSD-Operating-System/dp/0321968972

Bash:

Sources:
https://github.com/dylanaraps/pure-bash-bible
https://github.com/jlevy/the-art-of-command-line
https://github.com/koalaman/shellcheck
https://github.com/onceupon/Bash-Oneliner
https://github.com/topics/bash?o=desc&s=stars
https://news.ycombinator.com/item?id=14634964 (Ask HN: How can I get better at bash?)
https://pinboard.in/u:sharjeelsayed/t:bash

ABS Guide
http://tldp.org/LDP/abs/html

All commands sorted by votes | commandlinefu.com
http://www.commandlinefu.com/commands/browse/sort-by-votes

HackerRank Bash Challenges
https://www.hackerrank.com/domains/shell/bash

macOS:

Sources:
https://brew.sh
https://github.com/alichtman/shallow-backup
https://github.com/donnemartin/dev-setup
https://github.com/drduh/macOS-Security-and-Privacy-Guide
https://github.com/herrbischoff/awesome-macos-command-line
https://github.com/iCHAIT/awesome-macOS
https://github.com/jaywcjlove/awesome-mac
https://github.com/mathiasbynens/dotfiles
https://github.com/newmarcel/KeepingYouAwake
https://github.com/nikitavoloboev/my-mac-os
https://github.com/topics/macos?o=desc&s=stars
https://pinboard.in/u:sharjeelsayed/t:macos

Windows:

Sources:
https://github.com/Awesome-Windows/Awesome
https://github.com/topics/windows-10?o=desc&s=stars
https://github.com/W4RH4WK/Debloat-Windows-10
https://pinboard.in/u:sharjeelsayed/t:windows
https://www.reddit.com/r/sysadmin/comments/3z7qd9/practice_to_become_a_windows_sysadmin/cyjynxh
https://www.reddit.com/r/sysadmin/wiki/ms/resources
https://news.ycombinator.com/item?id=19698620 (Ask HN: How do you secure your Windows PC?)

Windows Server documentation - Microsoft
https://docs.microsoft.com/en-us/windows-server

Windows Server Courses from Microsoft Virtual Academy
https://mva.microsoft.com/LearningPaths.aspx

Windows Internals, Part 1: System architecture, processes, threads, memory management, and more (7th Edition)
https://www.amazon.com/Windows-Internals-Part-architecture-management/dp/0735684189
https://docs.microsoft.com/en-us/sysinternals/learn/windows-internals

Powershell:

Learn Windows PowerShell in a Month of Lunches 3rd Edition
https://www.amazon.com/Learn-Windows-PowerShell-Month-Lunches/dp/1617294160
https://www.youtube.com/playlist?list=PL6D474E721138865A

Storage:

Data Storage Networking: Real World Skills for the CompTIA Storage+ Certification and Beyond 1st Edition
https://www.amazon.com/Data-Storage-Networking-CompTIA-Certification/dp/1118679210

Docker:

Sources:
https://github.com/topics/docker?o=desc&s=stars
https://github.com/veggiemonk/awesome-docker
https://github.com/wsargent/docker-cheat-sheet

Docker for Beginners
https://prakhar.me/docker-curriculum

Play with Docker Classroom
https://training.play-with-docker.com

Docker Documentation
https://docs.docker.com

Docker and Kubernetes: The Complete Guide by Stephen Grider
https://www.udemy.com/docker-and-kubernetes-the-complete-guide

Kubernetes:

Sources:
https://github.com/ramitsurana/awesome-kubernetes
https://kubernetes.io/docs/home

An Introduction to Kubernetes
https://www.digitalocean.com/community/tutorials/an-introduction-to-kubernetes

Kubernetes official tutorials
https://github.com/kubernetes/kubernetes

VMware:

VMware vSphere 6.5 (VCP6.5-DCV) with 6.7 Updates
https://www.cbtnuggets.com/it-training/vmware-vsphere-6-vcp6-5-dcv

Mastering VMware vSphere 6 1st Edition
https://www.amazon.com/Mastering-VMware-vSphere-Nick-Marshall/dp/1118925157

OpenStack:

Sources:
https://docs.openstack.org
https://github.com/int32bit/openstack-cheat-sheet
https://github.com/openstack/training-labs
https://github.com/topics/openstack?o=desc&s=stars
https://github.com/topics/openstack?o=desc&s=stars
https://linuxacademy.com/openstack/courses
https://www.reddit.com/r/openstack/comments/92o38n/best_book_for_learning_openstack

OpenStack for Architects: Design production-ready private cloud infrastructure, 2nd Edition
https://www.amazon.com/OpenStack-Architects-production-ready-private-infrastructure/dp/1788624513

OpenStack Cloud Computing Cookbook - Fourth Edition
https://www.amazon.com/OpenStack-Cloud-Computing-Cookbook-networking/dp/1788398769

Data Center:

Data Center Fundamentals
http://www.amazon.com/Data-Center-Fundamentals-Mauricio-Arregoces/dp/1587050234

AWS:

Sources:
https://github.com/anaibol/awesome-serverless
https://github.com/donnemartin/awesome-aws
https://github.com/serverless/serverless
https://github.com/toniblyx/my-arsenal-of-aws-security-tools
https://github.com/topics/aws?o=desc&s=stars
https://www.reddit.com/r/sysadmin/comments/8inzn5/so_you_want_to_learn_aws_aka_how_do_i_learn_to_be

Amazon Web Services — a practical guide
https://github.com/open-guides/og-aws

Amazon Web Services in Action 2nd Edition
https://www.amazon.com/Amazon-Services-Action-Andreas-Wittig/dp/1617295116
https://www.manning.com/books/amazon-web-services-in-action-second-edition
https://github.com/AWSinAction

A Cloud Guru Courses: Amazon Web Services
https://acloud.guru/courses/amazon-web-services

Linux Academy: AWS Certification Training
https://linuxacademy.com/amazon-web-services/courses

QWIKLABS: Solutions Architect - Associate
https://www.qwiklabs.com/quests/10

NGINX:

Sources:
https://github.com/topics/nginx?o=desc&s=stars


NGINX documentation
http://nginx.org/en/docs

NGINX HTTP Server - Third Edition
https://www.amazon.com/Nginx-HTTP-Server-Clement-Nedelcu-ebook/dp/B016DPU3JS

Apache:

Apache HTTP Server Documentation
http://httpd.apache.org/docs

IIS

IIS 10.0 - The Official Microsoft IIS Site
https://www.iis.net/learn/get-started/whats-new-in-iis-10

HAProxy:

Load Balancing with HAProxy
https://www.amazon.com/Load-Balancing-HAProxy-availability-infrastructure/dp/1519073844

https://www.digitalocean.com/community/tutorials/an-introduction-to-haproxy-and-load-balancing-concepts

Memcached:

https://github.com/memcached/memcached/wiki

djbdns:

http://cr.yp.to/djbdns.html

SQL:

Sources:
https://pinboard.in/u:sharjeelsayed/t:sql

Stanford DB5 Course on SQL
https://lagunita.stanford.edu/courses/DB/SQL/SelfPaced/about

http://sqlzoo.net

https://www.sqlteaching.com

https://www.w3schools.com/sql

MySQL:

https://dev.mysql.com/doc/refman/5.7/en

SQL Server:

https://docs.microsoft.com/en-us/sql/sql-server/sql-server-technical-documentation

PostgreSQL:

https://www.postgresql.org/docs/9.3/static/index.html
https://pgexercises.com

Redis:

https://redis.io/documentation

Ansible:
Sources:
https://docs.ansible.com/ansible
https://github.com/topics/ansible?o=desc&s=stars

Ansible for DevOps
https://www.ansiblefordevops.com

Ansible Videos
https://www.ansible.com/videos

Interactive Ansible tutorials with dead simple setup via Docker
https://github.com/turkenh/ansible-interactive-tutorial

Ansible Essentials: Simplicity in Automation Technical Overview
https://www.redhat.com/en/services/training/do007-ansible-essentials-simplicity-automation-technical-overview

Puppet:

Download the Puppet Learning VM
https://puppet.com/download-learning-vm

Puppet 5 Beginner's Guide - Third Edition: Go from newbie to pro with Puppet 5
https://www.amazon.com/Puppet-Beginners-Guide-Third-newbie/dp/178847290X

Python:

Sources:
http://pybit.es/python-resources.html
http://pythonbooks.org
https://github.com/topics/python?o=desc&s=stars
https://github.com/vinta/awesome-python
https://news.ycombinator.com/item?id=16622038 (At full speed with Python: a book for self-learners)
https://www.reddit.com/r/learnprogramming/comments/6bxdut/python_for_beginners_complete_series
https://www.reddit.com/r/learnprogramming/wiki/online#wiki_python
https://www.reddit.com/r/learnpython/comments/53z5p4/how_to_start_learning_python_the_complete_guide
https://www.reddit.com/r/learnpython/comments/609p5x/selftaught_people_how_did_you_learn_python
https://www.reddit.com/r/learnpython/top
https://www.reddit.com/r/learnpython/wiki
https://www.reddit.com/r/Python

Learn Python 3 the Hard Way
https://learnpythonthehardway.org/python3
http://www.informit.com/promotions/book-registration-learn-python-3-the-hard-way-141409 (Videos)

Automate the Boring Stuff with Python
https://automatetheboringstuff.com

The Python Tutorial
http://docs.python.org/py3k/tutorial/index.html

A Gentle Introduction to Programming Using Python
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-189-a-gentle-introduction-to-programming-using-python-january-iap-2011

C:

Sources:
https://news.ycombinator.com/item?id=11606296 (To become a good C programmer (2011) (fabiensanglard.net))
https://news.ycombinator.com/item?id=12475383 (“Learn C the Hard Way” is no longer available for free)
https://news.ycombinator.com/item?id=15198093 (Beej's Guide to C Programming (2007))
https://news.ycombinator.com/item?id=16196194 (Brushing up on operating systems and C programming)
https://news.ycombinator.com/item?id=16347309 (Ask HN: What project did you tackle to learn C?)
https://news.ycombinator.com/item?id=19126544 (Show HN: Learn C and its lower levels interactively, in the browser)

Learn C The Hard Way
https://learncodethehardway.org/c
http://www.informit.com/promotions/book-registration-learn-c-the-hard-way-140880 (Videos)

C Programming: A Modern Approach
https://www.amazon.com/C-Programming-Modern-Approach-2nd/dp/0393979504

Java:

Sources:
https://github.com/akullpp/awesome-java
https://github.com/topics/java?o=desc&s=stars
https://www.reddit.com/r/learnprogramming/wiki/online#wiki_java

Object-Oriented programming with Java
http://mooc.fi/courses/2013/programming-part-1

Complete Java Masterclass
https://www.udemy.com/java-the-complete-java-developer-course

Head First Java 2nd Edition
http://www.amazon.com/Head-First-Java-Kathy-Sierra/dp/0596009208

Murach's Java Servlets and JSP
http://www.amazon.com/Murachs-Java-Servlets-JSP-2nd/dp/1890774448

Web Development:

Sources:
https://digitaldefynd.com/best-free-web-development-courses-tutorials-certification
https://github.com/bmorelli25/Become-A-Full-Stack-Web-Developer
https://github.com/thedaviddias/Front-End-Performance-Checklist
https://www.reddit.com/r/learnprogramming/comments/bvlsf7/the_odin_project_vs_colt_steeles_web_dev_bootcamp
https://www.reddit.com/r/webdev/comments/8lvsxa/is_colt_steele_web_dev_bootcamp_still_the_go_to

html & css is hard :A friendly web development tutorial for complete beginners
https://internetingishard.com/html-and-css

freeCodeCamp 
https://www.freecodecamp.com

The Web Developer Bootcamp by Colt Steele
https://www.udemy.com/the-web-developer-bootcamp

CS50's Web Programming with Python and JavaScript
https://www.edx.org/course/cs50s-web-programming-with-python-and-javascript-web

Node.js:

Sources:
https://github.com/sindresorhus/awesome-nodejs

Node.js Tutorial for Beginners: Learn Node in 1 Hour | Mosh
https://youtu.be/TlB_eWDSMt4

Node JS Tutorial for Beginners
https://www.youtube.com/playlist?list=PL4cUxeGkcC9gcy9lrvMJ75z9maRw4byYp

Tomcat:

Tomcat: The Definitive Guide
http://www.amazon.com/Tomcat-Definitive-Guide-Jason-Brittain/dp/0596101066

Regex:

Sources:
https://news.ycombinator.com/item?id=20608032 (Regex for Noobs – An Illustrated Guide (janmeppe.com))

Regular Expressions Cookbook: Detailed Solutions in Eight Programming Languages 2nd Edition
https://www.amazon.com/Regular-Expressions-Cookbook-Solutions-Programming/dp/1449319432

Learn regex the easy way
https://github.com/ziishaned/learn-regex

Online regex tester and debugger
https://regex101.com

Git:

Sources:
https://github.com/topics/git?o=desc&s=stars
https://news.ycombinator.com/item?id=18919599 (How to teach Git (rachelcarmena.github.io))

Pro Git
https://git-scm.com/book/en/v2

Learn Git Branching
https://learngitbranching.js.org

Vim:

Sources:
https://news.ycombinator.com/item?id=15400037 (Interactive Vim tutorial)
https://news.ycombinator.com/item?id=2936670 (Learn Vim Progressively)
https://pinboard.in/u:sharjeelsayed/t:vim

Learn Vim Progressively
http://yannesposito.com/Scratch/en/blog/Learn-Vim-Progressively

Practical Vim: Edit Text at the Speed of Thought , 2nd Edition
https://www.amazon.com/Practical-Vim-Edit-Speed-Thought/dp/1680501275

ELK:

https://www.elastic.co/guide/index.html

Security:

Sources:
http://www.fastrls.com/2017/10/30/offensive-security-training-videos
https://github.com/forter/security-101-for-saas-startups
https://github.com/Hack-with-Github/Awesome-Hacking
https://github.com/OWASP/CheatSheetSeries
https://github.com/topics/oscp?o=desc&s=stars
https://github.com/topics/security?o=desc&s=stars
https://hrushikeshk.github.io/blog/2018/01/15/security-resources
https://jhalon.github.io/becoming-a-pentester
https://news.ycombinator.com/item?id=12140477 (A practical security guide for web developers (github.com))
https://news.ycombinator.com/item?id=14791255 (Cybersecurity Humble Book Bundle)
https://news.ycombinator.com/item?id=15986100 (Ask HN: How can I learn computer security?)
https://news.ycombinator.com/item?id=17563857 (Ask HN: What are the best resources for learning security and pen testing?)
https://news.ycombinator.com/item?id=17749283 (Ask HN: Recommendations of good cybercrime novels?)
https://news.ycombinator.com/item?id=18487547 (Ask HN: Starting a career in security at 40?)
https://room362.com/start
https://s3ctur.wordpress.com/2017/06/19/breaking-into-infosec-a-beginners-curriculum
https://www.edx.org/learn/cybersecurity
https://www.reddit.com/r/crypto/wiki
https://www.reddit.com/r/netsec/wiki
https://www.reddit.com/r/netsec+privacy+SocialEngineering+onions+ReverseEngineering+crypto+blackhat+security+Malware+pwned+netsecstudents+computerforensics+HackBloc+securityCTF+xss+vrd+rootkit+REMath
https://www.reddit.com/r/netsecstudents/top/?sort=top&t=all
https://www.reddit.com/r/netsecstudents/wiki
https://xapax.github.io/blog/2017/01/14/OSCP.html
https://pinboard.in/u:sharjeelsayed/t:security

Penetration Testing: A Hands-On Introduction to Hacking
https://www.amazon.com/Penetration-Testing-Hands-Introduction-Hacking/dp/1593275641

Offensive Computer Security Spring 2014 Homepage Florida State University
http://www.cs.fsu.edu/~redwood/OffensiveComputerSecurity

Offensive Security Certified Professional
https://www.offensive-security.com/information-security-certifications/oscp-offensive-security-certified-professional

The Hacker Playbook 3: Practical Guide To Penetration Testing
https://www.amazon.com/Hacker-Playbook-Practical-Penetration-Testing/dp/1980901759

MIT Course Number 6.858 :Computer Systems Security
https://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-858-computer-systems-security-fall-2014

Hardware:

Sources:
https://news.ycombinator.com/item?id=14123394 (Ask HN: What's the Hacker News of hardware?)
https://news.ycombinator.com/item?id=15733760 (What are hardware development learning web tutorials?)

Professor Messer’s CompTIA 220-901 and 220-902 A+ Training Videos
http://www.professormesser.com/free-a-plus-training/220-901/comptia-220-900-course

Microsoft Excel:

Sources:
https://www.reddit.com/r/excel/comments/2e28s3/rexcel_advice_thread_repository
https://news.ycombinator.com/item?id=12448545 (You Suck at Excel with Joel Spolsky (2015) [video])

You Suck at Excel with Joel Spolsky
https://youtu.be/0nbkaYsR94c

Excel 2016 Bible 1st Edition
https://www.amazon.com/Excel-2016-Bible-John-Walkenbach/dp/1119067510

Electronics:

Sources:
https://news.ycombinator.com/item?id=16775744 (Ask HN: How to self-learn electronics?)
https://news.ycombinator.com/item?id=16920476 (Ask HN: Where did you learn modular electronics?)
https://news.ycombinator.com/item?id=20126760 (Open Source Electronics Lab for $30 (github.com))
https://www.reddit.com/r/AskElectronics/wiki

The Art of Electronics 3rd Edition
https://www.amazon.com/Art-Electronics-Paul-Horowitz/dp/0521809266

6.002.1x "Circuits and Electronics 1: Basic Circuit Analysis" Based on 6.002 MIT Course
https://courses.edx.org/courses/course-v1:MITx+6.002.1x_1+2T2016/info

Science:

Sources:
https://news.ycombinator.com/item?id=18085765 (Ask HN: What are some of the best documentaries you've seen?)
https://www.reddit.com/r/AskReddit/comments/5x2r6b/reddit_what_are_some_must_see_documentaries
https://www.reddit.com/r/AskReddit/comments/7yvhmi/what_is_the_most_interesting_documentary_youve
https://www.reddit.com/r/Documentaries/wiki
https://www.theguardian.com/books/booksblog/2017/jul/20/dawkins-sees-off-darwin-in-vote-for-most-influential-science-book

What If?: Serious Scientific Answers to Absurd Hypothetical Questions
https://www.amazon.com/What-If-Scientific-Hypothetical-Questions-ebook/dp/B00IYUYF4A

Thing Explainer: Complicated Stuff in Simple Words
https://www.amazon.com/Thing-Explainer-Complicated-Stuff-Simple-ebook/dp/B00XJYVF44

The Selfish Gene
https://www.amazon.com/Selfish-Gene-Anniversary-Landmark-Science/dp/0198788606

A Short History of Nearly Everything
https://www.amazon.com/Short-History-Nearly-Everything/dp/076790818X

Planet Earth
https://en.wikipedia.org/wiki/Planet_Earth_(franchise)

Cosmos: A Spacetime Odyssey
https://en.wikipedia.org/wiki/Cosmos:_A_Spacetime_Odyssey

Design:

Sources:
https://github.com/LisaDziuba/Awesome-Design-Tools
https://github.com/topics/design?o=desc&s=stars
https://github.com/topics/frontend?o=desc&s=stars
https://news.ycombinator.com/item?id=15328992 (Ask HN: Learn Modern web design and CSS)

The Design of Everyday Things
https://www.amazon.com/Design-Everyday-Things-Revised-Expanded/dp/0465050654

The ultimate guide for mobile developers, who want to design
https://medium.com/flawless-app-stories/https-medium-com-flawless-app-stories-the-ultimate-guide-for-mobile-developers-who-want-to-design-part1-a2d47c04fd49

Machine Learning:

Sources:
https://blog.floydhub.com/best-deep-learning-courses-updated-for-2019
https://news.ycombinator.com/item?id=12713056 (Ask HN: How to get started with machine learning?)
https://news.ycombinator.com/item?id=16493489 (Machine Learning Crash Course)
https://news.ycombinator.com/item?id=18321665 (Foundations of ML and AI: Book recommendations (dragan.rocks))
https://news.ycombinator.com/item?id=20674745 (Ask HN: What Neural Networks/Deep Learning Books Should I Read?)

Machine Learning by Andrew Ng
https://www.coursera.org/learn/machine-learning

Deep Learning Specialization by Andrew Ng
https://www.coursera.org/specializations/deep-learning

Career:

Interview Guides:

Sources:
http://blog.interviewing.io/what-really-matters-in-technical-interviews-we-analyzed-thousands-of-interviews-on-everything-from-language-to-code-style-heres-what-we-found
https://github.com/mxssl/sre-interview-prep-guide
https://github.com/topics/interview?o=desc&s=stars
https://hn.algolia.com/?query=interview&sort=byPopularity&prefix&page=0&dateRange=all&type=story
https://news.ycombinator.com/item?id=11246917 (How to Pass a Programming Interview)
https://news.ycombinator.com/item?id=14037313 (Questions to ask at the end of a technical interview)
https://news.ycombinator.com/item?id=14218559 (How to talk about yourself in a developer interview)
https://news.ycombinator.com/item?id=15341566 (Technical and non-technical tips for rocking your coding interview)
https://news.ycombinator.com/item?id=15468786 (Questions to ask in interviews (cternus.net))
https://news.ycombinator.com/item?id=15804795 (How to solve a hard programming interview question)
https://news.ycombinator.com/item?id=16126132 (Ask HN: How do I prepare for an interview for AMZ/GOOG/APL/FB?)
https://news.ycombinator.com/item?id=17908547 (Ask HN: Types of Questions to Ask Team Members Before Accepting Role?)
https://news.ycombinator.com/item?id=18253999 (C++ Programming Questions to Ask on Interview (2017) (tests4geeks.com))
https://www.reddit.com/r/AskReddit/comments/74sskj/what_are_some_red_flags_in_a_job_interview
https://www.reddit.com/r/AskReddit/comments/9vbwy8/what_are_good_questions_to_ask_potential
https://www.reddit.com/r/AskReddit/comments/abljyl/what_is_a_massive_red_flag_about_a_new_workplace
https://www.reddit.com/r/cscareerquestions/comments/4ce2s3/resource_interview_questions_my_massive
https://www.reddit.com/r/cscareerquestions/comments/8387zj/what_is_your_favorite_method_for_figuring_out_if
https://www.reddit.com/r/cscareerquestions/wiki
https://pinboard.in/u:sharjeelsayed/t:cheatsheet
https://pinboard.in/u:sharjeelsayed/t:interview
https://pinboard.in/u:sharjeelsayed/t:jobs

An attempt to answer the age old interview question "What happens when you type google.com into your browser and press enter?"
https://github.com/alex/what-happens-when

Linux System Administrator/DevOps Interview Questions
https://github.com/chassing/linux-sysadmin-interview-questions

The System Design Primer
https://github.com/donnemartin/system-design-primer

Devops Interview Questions
https://github.com/Leo-G/DevopsWiki/wiki/Devops-Interview-Questions

Awesome Interviews
https://github.com/MaximAbramchuck/awesome-interview-questions

Coding Interview University
https://github.com/jwasham/coding-interview-university

Everything you need to prepare for your technical interview
https://github.com/andreis/interview

Algorithms, front end and behavioral content for rocking your coding interview
https://github.com/yangshun/tech-interview-handbook

500 Data Structures and Algorithms practice problems and their solutions
https://techiedelight.quora.com/500-Data-Structures-and-Algorithms-practice-problems-and-their-solutions

Cracking the Coding Interview: 189 Programming Questions and Solutions
https://www.amazon.com/Cracking-Coding-Interview-6th-Programming/dp/0984782850

Elements of Programming Interviews in Python: The Insiders' Guide
https://www.amazon.com/Elements-Programming-Interviews-Python-Insiders/dp/1537713949

Company Interview Corner - GeeksforGeeks
http://www.geeksforgeeks.org/company-interview-corner

Technical Interview Questions | CareerCup
https://www.careercup.com/categories

Search Interview Questions
https://www.glassdoor.com/Interview/index.htm

LeetCode
https://leetcode.com

HackerRank
https://www.hackerrank.com

Firecode.io
https://www.firecode.io

codesignal
https://codesignal.com

A collection of *nix Sysadmin Test Questions and Answers for Interview/Exam (2018 Edition)
https://github.com/trimstray/test-your-sysadmin-skills

Watch technical mock interviews with engineers from Google, Facebook, Airbnb, and more
https://interviewing.io/recordings

Resume Improvement:

Sources:
https://github.com/posquit0/Awesome-CV
https://github.com/topics/cv?o=desc&s=stars
https://github.com/topics/resume?o=desc&s=stars
https://news.ycombinator.com/item?id=16479922 (Ask HN: Resumes that look good but professional too)
https://news.ycombinator.com/item?id=17671490 (Building a Kickass Portfolio)
https://www.reddit.com/r/sysadminresumes/top

https://pinboard.in/u:sharjeelsayed/t:resume

Job Portals:

Sources:
https://github.com/lukasz-madon/awesome-remote-job
https://github.com/poteto/hiring-without-whiteboards
https://news.ycombinator.com/item?id=14686745 (Ask HN: What are some of the best job boards you have seen (any industry)?)
https://news.ycombinator.com/item?id=15473776 (Ask HN: What do you care about the most in a tech job post?)
https://news.ycombinator.com/item?id=15646550 (Ask HN: What is your favorite place to find work?)
https://news.ycombinator.com/item?id=16492393 (Ask HN: How Did You Find a Job Abroad?)
https://news.ycombinator.com/item?id=16875868 (List of places to find remote jobs and freelancing projects)
https://news.ycombinator.com/item?id=17047736 (Ask HN: How to become a remote contractor?)
https://news.ycombinator.com/item?id=19024575 (Ask HN: Highest paying remote companies?)
https://news.ycombinator.com/item?id=19280341 (Ask HN: Tools or sites you use to scope out a workplace before taking a job?)
https://pinboard.in/u:sharjeelsayed/t:jobs
https://www.reddit.com/r/india/comments/81r29c/your_onestop_guide_to_emigrating_long_term_to

https://www.linkedin.com/jobs
https://www.naukri.com
http://www.freejobalert.com
https://www.indeed.co.in
https://www.shine.com
https://www.glassdoor.co.in
https://www.freshersworld.com
http://www.monsterindia.com
http://www.timesjobs.com
https://www.fresherslive.com
https://angel.co
Note: Update your resume on the above sites every Sunday post 12 AM (IST).

Job Search Engines:

https://www.indeed.co.in
https://stackoverflow.com/jobs
https://www.placementindia.com
https://india.recruit.net
https://www.simplyhired.co.in
https://whoishiring.io

Company and Salary Reviews:

https://www.payscale.com/research/IN/Country=India/Salary
https://careernavigator.naukri.com
https://www.glassdoor.co.in/Salaries/india-salary-SRCH_IL.0,5_IN115.htm
https://stackoverflow.com/jobs/salary

Freelancer:

Sources:
https://docs.google.com/spreadsheets/d/1JfNAbUX_lN9K3MCNHO15GJtJ5qpk7H9Cl3xTBwv2FR8 (Remote Jobs or Gigs Platforms)
https://news.ycombinator.com/item?id=16651077 (Ask HN: How do you find freelance work?)
https://news.ycombinator.com/item?id=18829691 (Ask HN: Fastest way to get started with freelancing?)
https://news.ycombinator.com/item?id=19133864 (Ask HN: How bad is freelancing?)

https://www.guru.com
https://nomadprojects.io
https://www.freelancer.com
https://www.upwork.com

Management:

Sources:
http://sabok.org (Guide to the Systems Administration Body of Knowledge)
http://startupstash.com
http://www.toomas.net/2017/07/18/reverse-engineering-a-successful-lifestyle-business-heres-everything-ive-learned-from-reading-indiehackers-com
https://github.com/dakshshah96/awesome-startup-credits (A collection of awesome companies offering free/discounted plans for eligible startups)
https://news.ycombinator.com/item?id=11209066 (Why you probably don't need an MBA)
https://news.ycombinator.com/item?id=13207268 (Ask HN: How do I get freelance developer jobs?)
https://news.ycombinator.com/item?id=13855577 (Ask HN: What do you use to align your daily todos with your long term goals?)
https://news.ycombinator.com/item?id=14146850 (Ask HN: Best business advice for software developers)
https://news.ycombinator.com/item?id=14279870 (Ask HN: Should I create a clone of a popular SaaS with rock-bottom pricing?)
https://news.ycombinator.com/item?id=14316349 (Ask HN: Freelance Management Services/Apps)
https://news.ycombinator.com/item?id=14569154 (Ask HN: Where to find co-developers for side projects?)
https://news.ycombinator.com/item?id=14653564 (Ask HN: As an employee of a company, how do you assess its health?)
https://news.ycombinator.com/item?id=14726130 (Ask HN: How to prepare for an Engineering Manager interview?)
https://news.ycombinator.com/item?id=15039829 (Ask HN: What costly inefficiency do you see at work?)
https://news.ycombinator.com/item?id=15579047 (Ask HN: How do you take idea notes / voice memos / reminders to yourself?)
https://news.ycombinator.com/item?id=15831046 (Ask HN: Time Management Tricks and Tips)
https://news.ycombinator.com/item?id=16322942 (Ask HN: Simple tools/hack for small project management)
https://news.ycombinator.com/item?id=16377523 (Ask HN: Best project management practices in 2018?)
https://news.ycombinator.com/item?id=16453227 (Ask HN: How do you overcome the problems of task switching?)
https://news.ycombinator.com/item?id=16482392 (Ask HN: Successful one-person online businesses?)
https://news.ycombinator.com/item?id=16508308 (Ask HN: What are your best domestic time saving tips?)
https://news.ycombinator.com/item?id=16522756 (Ask HN: What are good writing tips for software developers?)
https://news.ycombinator.com/item?id=16560812 (Ask HN: What tools have most helped your day-to-day productivity?)
https://news.ycombinator.com/item?id=16671944 (How to Fall Asleep in Two Minutes or Less)
https://news.ycombinator.com/item?id=16852410 (Tell HN: My best productivity hack)
https://news.ycombinator.com/item?id=17031588 (Ask HN: Advice to your younger self)
https://news.ycombinator.com/item?id=17204467 (Ask HN: Recommendations on books and documentaries on tech companies/people?)
https://news.ycombinator.com/item?id=17238135 (How to be a Manager – A step-by-step guide to leading a team)
https://news.ycombinator.com/item?id=17291127 (Ask HN: Is there a new habit you cultivated recently that is really paying off?)
https://news.ycombinator.com/item?id=17295064 (Ask HN: How do you manage your mental health?)
https://news.ycombinator.com/item?id=17385291 (Ask HN: What are the things that you have automated in your personal life?)
https://news.ycombinator.com/item?id=17398726 (Ask HN: Which project management and team communication software do you use?)
https://news.ycombinator.com/item?id=17544764 (Ask HN: How do you focus at work?)
https://news.ycombinator.com/item?id=17892731 (Ask HN: How to organize personal knowledge?)
https://news.ycombinator.com/item?id=17942709 (Ask HN: As a technical founder what is the best business book you've read?)
https://news.ycombinator.com/item?id=18071909 (Ask HN: What was the best decision you made in your career?)
https://news.ycombinator.com/item?id=18098992 (Ask HN: What things have richly rewarded the time invested in mastering them?)
https://news.ycombinator.com/item?id=18132736 (Ask HN: What did you learn the hard way?)
https://news.ycombinator.com/item?id=18179972 (How to Get Things Done When You Don't Feel Like It (acm.org))
https://news.ycombinator.com/item?id=18588727 (Ask HN: What are your ?brain hacks? that help you manage every day situations?)
https://news.ycombinator.com/item?id=19349676 (Ask HN: How to speak like a leader, not like an engineer?)
https://news.ycombinator.com/item?id=19996062 (Ask HN: What tools/methods do you use to focus your time well?)
https://news.ycombinator.com/item?id=20230133 (Ask HN: What are the signs that you have a great manager?)
https://news.ycombinator.com/item?id=20503813 (Ask HN: What people skills do you wish you learned earlier in your career?)
https://www.indiehackers.com
https://www.reddit.com/r/cscareerquestions/comments/6fnujy/soft_skills_for_programmers

Site Reliability Engineering: How Google Runs Production Systems
https://landing.google.com/sre/sre-book/toc

The Phoenix Project: A Novel about IT, DevOps, and Helping Your Business Win
https://www.amazon.com/Phoenix-Project-DevOps-Helping-Business/dp/0988262509

The DevOps Handbook: How to Create World-Class Agility, Reliability, and Security in Technology Organizations
https://www.amazon.com/DevOps-Handbook-World-Class-Reliability-Organizations/dp/1942788002

The Practice of System and Network Administration: Volume 1: DevOps and other Best Practices for Enterprise IT (3rd Edition)
https://www.amazon.com/dp/0321919165

The Manager's Path: A Guide for Tech Leaders Navigating Growth and Change
https://www.amazon.com/Managers-Path-Leaders-Navigating-Growth/dp/1491973897

The Personal MBA: Master the Art of Business
https://www.amazon.com/Personal-MBA-Master-Art-Business/dp/1591845572

The Art Of War
https://www.amazon.com/Art-War-Sun-Tzu/dp/1599869772
https://www.gutenberg.org/ebooks/132

How to Win Friends & Influence People
https://www.amazon.com/How-Win-Friends-Influence-People/dp/0671027034

The Power Broker: Robert Moses and the Fall of New York
https://www.amazon.com/Power-Broker-Robert-Moses-Fall/dp/0394720245

Zero to One: Notes on Start Ups, or How to Build the Future
https://www.amazon.com/Zero-One-Notes-Start-Future-ebook/dp/B00KHX0II4

Startup School is a free 10-week massively open online course (MOOC)
https://www.startupschool.org

Never Split the Difference: Negotiating as if Your Life Depended on It
https://www.amazon.com/Never-Split-Difference-Negotiating-Depended/dp/B01COR1GM2

Money:

Sources:
https://codewithoutrules.com/2016/08/08/living-below-your-means
https://news.ycombinator.com/item?id=12556160 (Ask HN: What are the must-read books about economics/finance?)
https://news.ycombinator.com/item?id=15140182 (A Guide to Crypto Currencies (mycrypto.guide))
https://news.ycombinator.com/item?id=15222819 (A New Way to Learn Economics (newyorker.com))
https://news.ycombinator.com/item?id=15779722 (A good resource for financial advice to share with people in their twenties?)
https://news.ycombinator.com/item?id=15786703 (Stanford CS007: Personal Finance For Engineers)
https://news.ycombinator.com/item?id=17359102 (Ask HN: What are some good resources to learn how to invest and build wealth?)
https://news.ycombinator.com/item?id=18526090 (Ask HN: Online banks where I can open account worldwide?)
https://news.ycombinator.com/item?id=20154382 (Books to Understand Economics (filmlifestyle.com))
https://news.ycombinator.com/item?id=20521902 (Ask HN: What did you do when you suddenly got rich?)
https://www.amazon.com/gp/bestsellers/books/491584
https://www.reddit.com/r/Economics/wiki/reading
https://www.reddit.com/r/india/comments/6b480c/psa_investing_in_mutual_funds_101
https://www.reddit.com/r/IndiaInvestments/wiki

Basic Economics 5th Edition
https://www.amazon.com/Basic-Economics-Thomas-Sowell/dp/0465060730

Financial Markets by Robert Shiller
https://www.coursera.org/learn/financial-markets-global

The Intelligent Investor
https://www.amazon.com/Intelligent-Investor-Definitive-Investing-Essentials/dp/0060555661

Foreign Language:

https://www.duolingo.com
https://www.memrise.com

Study Tools:

Sources:
http://www.flyingmachinestudios.com/programming/learn-programming-languages-efficiently
https://80000hours.org/career-guide/how-to-be-successful
https://alexvermeer.com/8760hours (8,760 Hours: How to get the most out of next year)
https://collegeinfogeek.com/spaced-repetition-memory-technique
https://en.wikipedia.org/wiki/Pomodoro_Technique
https://news.ycombinator.com/item?id=14218408 (Ask HN: How do you keep improving?)
https://news.ycombinator.com/item?id=16202123 (How to Study: A Brief Guide (buffalo.edu))
https://www.coursera.org/learn/learning-how-to-learn

Ebooks:

Sources:
http://booksreddit.com
http://ramiro.org/vis/hn-most-linked-books-unique-users
http://reddittopbooks.com/tech
http://www.bookadvice.co
http://www.dev-books.com (The most mentioned books on Stack Overflow)
http://www.openculture.com/free_textbooks
https://bookinsider.gitlab.io
https://docs.google.com/spreadsheets/d/e/2PACX-1vQDca1iI1GgcMwBl65XRvJaAnZOv6sCjmAamy_7cioVMV4U_VnBksgZrIKTe5P4aneEXtion1ZA7iPe/pubhtml (Pinker Book Recommendations)
https://github.com/aaronthecodpro/Reddit-Privacy-Megathread
https://github.com/Igglybuff/awesome-piracy
https://hackernewsbooks.com
https://hn.algolia.com/?query=books&sort=byPopularity&prefix&page=0&dateRange=all&type=story
https://news.ycombinator.com/item?id=13803787 (Ask HN: What books fundamentally changed the way you think about the world?)
https://news.ycombinator.com/item?id=14477851 (Ask HN: Books you wish you had read earlier?)
https://news.ycombinator.com/item?id=15155833 (Ask HN: What books have made the biggest impact on your mental models?)
https://news.ycombinator.com/item?id=15629762 (Ask HN: What are your favorite books of all time, and why?)
https://news.ycombinator.com/item?id=15761599 (Ask HN: Books on specific topics that have applied to many areas of your life?)
https://news.ycombinator.com/item?id=16241500 (Ask HN: What books have most influenced the way you see the world?)
https://news.ycombinator.com/item?id=16296200 (Ask HN: Which books do you wish you'd read earlier in life?)
https://news.ycombinator.com/item?id=16351310 (Ask HN: What are the books you wish your colleagues had read?)
https://news.ycombinator.com/item?id=16756243 (Ask HN: What books do you keep on your desk?)
https://news.ycombinator.com/item?id=17045790 (Ask HN: Which books have made you introspect?)
https://news.ycombinator.com/item?id=17128513 (Ask HN: Which non-programming books are a beneficial read for programmers?)
https://news.ycombinator.com/item?id=17625795 (Ask HN: Which books are “must-read” for anyone trying to learn about your field?)
https://news.ycombinator.com/item?id=17909694 (Ask HN: What are your favorite non-fiction books of all time?)
https://news.ycombinator.com/item?id=17980964 (Ask HN: What was the one book that you read and it actually changed your life?)
https://news.ycombinator.com/item?id=18104814 (Ask HN: What are the best textbooks in your field of expertise?)
https://news.ycombinator.com/item?id=18469649 (Ask HN: Older textbooks/papers you consider classics still worth studying today?)
https://news.ycombinator.com/item?id=19087418 (Ask HN: What books changed the way you think about almost everything?)
https://opentrackers.org/downloading-ebooks-textbooks
https://redditfavorites.com/books
https://torrentfreak.com/top-10-most-popular-torrent-sites-of-2019
https://www.amazon.com/charts
https://www.reddit.com/r/AskReddit/comments/34m5n6/reddit_what_are_some_must_read_books
https://www.reddit.com/r/AskReddit/comments/8cl833/what_are_some_good_books_that_would_make_the
https://www.reddit.com/r/AskReddit/comments/8gy4nd/what_are_some_cool_websites_where_you_can
https://news.ycombinator.com/item?id=20332455 (Ask HN: Recommend one book I need to read this summer?)
https://www.reddit.com/r/Piracy/wiki/megathread
https://pinboard.in/u:sharjeelsayed/t:course
https://pinboard.in/u:sharjeelsayed/t:ebooks
https://pinboard.in/u:sharjeelsayed/t:learn

http://libgen.io or http://gen.lib.rus.ec
https://forcoder.su
https://ebookee.org
https://1337x.to
https://thepiratebay.org or https://thepiratebay-proxylist.org
http://rarbg.to or https://rarbg.is
https://torrentz2.eu
https://www.limetorrents.cc
http://b-ok.org
http://freebookspot.es
https://www.myanonamouse.net
http://findlectures.com
http://breue.com/free_programming_books
irc://irc.undernet.org/bookz
irc://irc.irchighway.net/ebooks
https://books.goalkicker.com
https://www.safaribooksonline.com # An ACM Membership provides Safari Books online membership for less.India Sign up page https://services.acm.org/public/qj/proflevel/proflevel_control.cfm?level=3&country=India&form_type=Professional&promo=LEVEL&pay=DD
https://cse.google.com/cse/publicurl?cx=011394183039475424659:5bfyqg89ers (Google Custom Search Engine for Ebooks)
https://cse.google.com/cse/publicurl?cx=001639227550064093264:dznewka3cca (Google Custom Search Engine for Ebooks)

MOOC:

Sources:
http://academictorrents.com
http://lifehacker.com/tag/lifehacker-u
http://www.openculture.com/freeonlinecourses#Computer Science Courses
https://archive.org/search.php?query=subject%3A%22UC+Berkeley%22
https://blog.github.com/2018-03-20-top-10-courses-on-github
https://github.com/learn-awesome/learn-awesome
https://github.com/sindresorhus/awesome
https://hackr.io
https://news.ycombinator.com/item?id=10644518 (Ask HN: What's your favorite online course?)
https://news.ycombinator.com/item?id=13867016 (Ask HN: Which Berkeley Courses Should I Archive?)
https://news.ycombinator.com/item?id=14570002 (Startup School 2017 Presentations (startupschool.org))
https://news.ycombinator.com/item?id=14770521 (Ask HN: Any “bootcamps” or courses for intermediate/advanced people?)
https://news.ycombinator.com/item?id=16745042 (Ask HN: What are the best MOOCs you've taken?)
https://news.ycombinator.com/item?id=17616937 (Ask HN: Any good examples of learning through games/puzzles, for adults?)
https://news.ycombinator.com/item?id=17999659 (Ask HN: Favorite teachers on YouTube?)
https://news.ycombinator.com/item?id=18566638 (Ask HN: What is the best online course you've ever taken?)
https://news.ycombinator.com/item?id=20385679 (Ask HN: What are your favorite YouTube channels to learn stuff?)
https://news.ycombinator.com/item?id=20583581 (Your favourite tutorial for total beginners?)
https://www.class-central.com/collection/top-free-online-courses?utm_source=top-50-course-page
https://www.class-central.com/subject/cs
https://www.classcentral.com/starting-this-month
https://www.coursebuffet.com/sub/computer-science
https://www.coursera.org/browse/computer-science
https://www.cybrary.it
https://www.edx.org/course/subject/computer-science
https://www.freecodecamp.org/news/free-programming-courses-august-2019
https://www.masterclass.com
https://www.omscs.gatech.edu (Georgia Tech Online Master of Science in Computer Science)
https://www.real.discount (Discount coupons for Popular courses and MOOC Platforms)
https://www.reddit.com/r/DataHoarder/comments/c6fh4x/after_hoarding_over_50k_youtube_videos_here_is
https://www.reddit.com/r/sysadmin/comments/65wdum/whats_your_favorite_selfstudy_resource_paid_free
https://www.sololearn.com
https://www.udacity.com/courses/all

News:

Sources:
https://dev.to
https://github.com/greybax/awesome-IT-films/blob/master/documentary.md
https://hckrnews.com
https://hn.algolia.com
https://hn.algolia.com/?query=documentaries&sort=byPopularity&prefix&page=0&dateRange=all&type=story
https://news.ycombinator.com/item?id=14086259 (Ask HN: Mailing lists that HN readers ought to know about?)
https://news.ycombinator.com/item?id=14163905 (Ask HN: Which companies have the best blogs written by their engineering team?)
https://news.ycombinator.com/item?id=14378536 (Ask HN: Which websites do you visit?)
https://news.ycombinator.com/item?id=14724092 (Ask HN: Which sites you visit on a regular basis for knowledge and inspiration?)
https://news.ycombinator.com/item?id=14918647 (Ask HN: What is your content discovery daily routine?)
https://news.ycombinator.com/item?id=15098066 (Ask HN: What online communities offer a high level of discussion?)
https://news.ycombinator.com/item?id=16338503 (Ask HN: How do you manage to go through so much of good content posted on HN?)
https://news.ycombinator.com/item?id=16561799 (Ask HN: What's the Hacker News for different industries?)
https://news.ycombinator.com/item?id=17202615 (Ask HN: Which YouTube channels do you watch regularly?)
https://news.ycombinator.com/item?id=17690852 (Ask HN: What are some niche communities you enjoy?)
https://news.ycombinator.com/item?id=18384680 (Ask HN: Other online communities like HN?)
https://news.ycombinator.com/item?id=20023209 (Ask HN: What are your other favorite communities other than Hacker News?)
https://news.ycombinator.com/item?id=20719651 (Ask HN: What are some niche or alternative news aggregators worth checking out?)
https://news.ycombinator.com/item?id=9836023 (Ask HN: What tech blogs, podcasts do you follow outside of HN?)
https://pinboard.in/popular
https://www.hackernewspapers.com
https://www.reddit.com/r/AskReddit/comments/9nggyv/what_is_a_great_youtube_channel_to_binge_watch
https://www.reddit.com/r/AskReddit/comments/aa7zs9/what_youtube_channels_are_genuinely_worth_watching
https://www.taggernews.com
https://www.youtube.com/channel/UCF0pVplsI8R5kcAqgtoRqoA (Popular on YouTube)

RSS Reader:
Import http://Opml.SharjeelSayed.com , into Inoreader.com

Tech News Notifications (iOS/Android):
Install the IFTTT Mobile app .Turn on the applet https://IFTTT.com/applets/456148p and add https://www.techmeme.com/feed.xml into the 'Feed URL' field of the applet.

Subreddits to subscribe:
https://www.reddit.com/r/AppleWatch+CryptoCurrency+DataHoarder+Documentaries+IndiaInvestments+Vaping+announcements+apple+compsci+cscareerquestions+electronic_cigarette+gadgets+hackernews+india+ipad+iphone+juul+learnprogramming+linux+linuxadmin+movies+mumbai+netsec+networking+onebag+programming+science+solotravel+sysadmin+television+todayilearned+travel+vagabond+worldnews

Bookmarks:
Import http://Bookmarks.SharjeelSayed.com into your Browser or view live at https://pinboard.in/u:SharjeelSayed

https://twitter.com/SharjeelSayed

Podcasts:

Sources:
https://news.ycombinator.com/item?id=13574916 (Ask HN: What are some 'must watch' talks?)
https://news.ycombinator.com/item?id=13747563 (Ask HN: What are your favorite tech podcasts?)
https://news.ycombinator.com/item?id=14529759 (Ask HN: What podcasts are you listening to?)
https://news.ycombinator.com/item?id=14819798 (Ask HN: What are your favorite podcasts?)
https://news.ycombinator.com/item?id=15170121 (Ask HN: What audio resources can improve my technical skills during my commute?)
https://news.ycombinator.com/item?id=16838460 (Ask HN: What is your favourite tech talk?)
https://news.ycombinator.com/item?id=18073169 (Ask HN: What podcasts do you listen to regularly?)
https://news.ycombinator.com/item?id=18217762 (Ask HN: What are some of the best technical talks you've heard?)
https://news.ycombinator.com/item?id=19095780 (Ask HN: What podcast has been most influential on your life?)
https://news.ycombinator.com/item?id=9207360 (Ask HN: Favorite podcasts?)
https://www.reddit.com/r/sysadmin/comments/au8ugd/what_are_your_preferred_tech_podcasts_as_a

Collection of awesome podcasts
https://github.com/rShetty/awesome-podcasts

Ambient Music:

Sources:
https://news.ycombinator.com/item?id=11146712 (AI generated music to improve focus, relaxation and sleep (brain.fm))
https://news.ycombinator.com/item?id=12844434 (Music for Programming (musicforprogramming.net))
https://news.ycombinator.com/item?id=17118269 (Ask HN: What, if anything, do you listen to while coding?)
https://news.ycombinator.com/item?id=18493075 (Brain.fm: Music to improve focus, meditation and sleep)
https://news.ycombinator.com/item?id=20724959 (Ask HN: Where do you find new music to listen to online?)
https://www.reddit.com/r/cscareerquestions/comments/7s6ral/music_while_coding
https://www.reddit.com/r/medicalschool/comments/9m4afb/serious_spotify_playlists_to_listen_to_while
https://pinboard.in/u:SharjeelSayed/t:music+study

soma fm's Drone Zone Channel
http://somafm.com/player/#/now-playing/dronezone

myNoise : Custom Background Noise Machines
https://mynoise.net

Focus Playlists on Spotify
https://open.spotify.com/view/focus-page

Headphones:

The Best Noise-Cancelling Headphones
http://thewirecutter.com/reviews/best-noise-cancelling-headphones

Amazon Best Sellers in Audio Headphones
https://www.amazon.com/gp/bestsellers/electronics/172541

Ear Plugs:

Sources:
https://thewirecutter.com/reviews/best-earplugs-for-sleeping
https://www.amazon.com/gp/bestsellers/hpc/3779871/ref=pd_zg_hrsr_hpc_1_4_last

Mack's Ultra Soft Foam Earplugs
https://www.amazon.com/Macks-Ultra-Soft-Foam-Earplugs/dp/B0051U7W32

Backup:

Sources:
http://gaul.org/object-store-comparison
https://clonezilla.org
https://cryptomator.org
https://github.com/gilbertchen/benchmarking
https://github.com/gilbertchen/cloud-storage-comparison
https://github.com/gilbertchen/duplicacy
https://github.com/jbruchon/jdupes
https://github.com/restic/others
https://github.com/topics/backup?o=desc&s=stars
https://news.ycombinator.com/item?id=17603348 (Ask HN: How do you backup your files without depending on a third party service?)
https://news.ycombinator.com/item?id=18692844 (Ask HN: Best Centralized Backup Solution)
https://nuetzlich.net/gocryptfs/comparison
https://restic.readthedocs.io/en/stable/100_references.html#design
https://ruderich.org/simon/notes/append-only-backups-with-restic-and-rclone
https://syncthing.net
https://szymonkrajewski.pl/synchronize-local-files-cryptomator-vault
https://www.backblaze.com/b2/cloud-storage-pricing.html
https://www.reddit.com/r/DataHoarder/comments/axvxwl/anything_cheaper_than_backblaze_b2

Restic
https://restic.net

rclone - rsync for cloud storage
https://rclone.org

Backblaze B2 Cloud Storage
https://www.backblaze.com/b2/cloud-storage.html

Additional Sources :
https://en.wikipedia.org/wiki/Wikipedia:Vital_articles
https://freenode.net
https://github.com/255kb/stack-on-a-budget
https://github.com/jnv/lists
https://github.com/ripienaar/free-for-dev
https://github.com/topics/awesome
https://hackerspaces.org
https://hnprofile.com (Find an Expert on Hacker News)
https://learn-anything.xyz
https://my.mindnode.com/KdeMPbxs8KPixsa5YUq5cphqJnQg81vpHaXcDX2i#-48.5,-680.3,0
https://news.ycombinator.com/item?id=12209446 (How to Read a Book [pdf])
https://news.ycombinator.com/item?id=14087880 (Ask HN: What are some great “Free” services provided by IBM, Amazon, etc.?)
https://news.ycombinator.com/item?id=14637859 (Ask HN: What's your process for learning?)
https://news.ycombinator.com/item?id=15105601 (Ask HN: What are your favorites self hosted tools?)
https://news.ycombinator.com/item?id=17272715 (Ask HN: Any resources to learn the fundamentals of critical thinking?)
https://news.ycombinator.com/item?id=19242058 (Ask HN: What VPN service are you currently using?)
https://news.ycombinator.com/item?id=19521136 (Ask HN: What backpack are you using?)
https://news.ycombinator.com/item?id=20007108 (Ask HN: Do you keep a personal knowledge repository?)
https://news.ycombinator.com/item?id=20110922 (How to Draw Animals (1930) (dessinoprimaire.blogspot.com))
https://news.ycombinator.com/item?id=20146168 (Sleep tweaks boost night owls' wellbeing (bbc.com))
https://news.ycombinator.com/item?id=20225118 (Ask HN: Best free compute and other resources for startups?)
https://news.ycombinator.com/item?id=20371095 (Ask HN: Best Office Chair for Remote (Home Office) Work)
https://redditprofile.com (Find an Expert on Reddit)
https://www.nala.ie/resources/better-handwriting-adults
https://www.producthunt.com
https://www.reddit.com/r/Addons4Kodi/comments/c9c5om/recommended_addons_july_2019
https://www.reddit.com/r/AskReddit/comments/4q91g9/what_free_things_online_should_everyone_take/d4r8foy
https://www.reddit.com/r/AskReddit/comments/6k0p7l/what_are_the_best_free_online_certificates_you
https://www.reddit.com/r/AskReddit/comments/6q2b8x/reddit_whats_become_clear_to_you_as_youve_gotten
https://www.reddit.com/r/AskReddit/comments/70q5f2/reddit_what_are_the_most_useful_askreddit_posts
https://www.reddit.com/r/sysadmin/comments/4oxxgv/your_favorite_scripts_you_have_stolen_or_made

https://cse.google.com/cse/publicurl?cx=013208504250323700475:mqurmsvnc8k (Google Custom Search Engine for Sharjeel's Bookmarks)
https://github.com/SharjeelSayed?direction=desc&sort=stars&tab=stars
https://news.ycombinator.com/user?id=sharjeelsayed
https://www.goodreads.com/user/show/36136296-sharjeel-sayed
https://www.reddit.com/user/SharjeelSayed
https://www.youtube.com/user/SayedSharjeel/channels