### Index * [Ada](#ada) * [Android](#android) * [Bash](#bash) * [C](#c) * [C#](#csharp) * [C++](#cpp) * [Clojure](#clojure) * [Cloud Computing](#cloud-computing) * [CoffeeScript](#coffeescript) * [Dart](#dart) * [Data Science](#data-science) * [Erlang](#erlang) * [Git](#git) * [GLSL](#glsl) * [Go](#go) * [GraphQL](#graphql) * [Haskell](#haskell) * [HTML and CSS](#html-and-css) * [Bootstrap](#bootstrap) * [IDE and editors](#ide-and-editors) * [Java](#java) * [JavaScript](#javascript) * [AngularJS](#angularjs) * [jQuery](#jquery) * [React](#react) * [Redux](#redux) * [Kotlin](#kotlin) * [Language Agnostic](#language-agnostic) * [Operating Systems](#operating-systems) * [LaTeX](#latex) * [Lisp](#lisp) * [Markdown](#markdown) * [MATLAB](#matlab) * [Node](#node) * [NoSQL](#nosql) * [Objective-C](#objective-c) * [Ocaml](#ocaml) * [PHP](#php) * [PostgreSQL](#postgresql) * [Python](#python) * [R](#r) * [Regular Expressions](#regular-expressions) * [Ruby](#ruby) * [Rust](#rust) * [Scala](#scala) * [Selenium](#selenium) * [Solidity](#solidity) * [SQL](#sql) * [XML](#xml) ### Ada * [Introduction to Ada](https://learn.adacore.com/courses/intro-to-ada/index.html) - Adacore ### Android * [Android Tutorial](https://www.tutlane.com/tutorial/android) - tutlane * [Javatpoint Android Tutorial](https://www.javatpoint.com/android-tutorial) - javaTpoint ### Bash * [Help messages will explain everything](https://explainshell.com) - explainshell * [Learn Shell Programming](http://www.learnshell.org) - learnshell ### C * [C Tutorial](https://www.scaler.com/topics/c/) - Scaler Topics * [Learn C](http://www.learn-c.org) - Learn-C ### <a id="csharp"></a>C\# * [C# Tutorial](https://www.tutlane.com/tutorial/csharp) - tutlane * [C# Tutorial](https://www.w3schools.com/cs) - W3Schools * [Codeasy](https://codeasy.net/course/csharp_elementary) - codeasy * [Learn C#](http://www.learncs.org) - learnCS * [Learn C#](https://www.codecademy.com/learn/learn-c-sharp) - Codecademy ### <a id="cpp"></a>C++ * [C++ Programming Language](https://www.geeksforgeeks.org/c-plus-plus/) - GeeksforGeeks * [C++ Tutorial](https://www.w3schools.com/cpp) - W3Schools * [C++ Tutorial](https://www.scaler.com/topics/cpp/) - Scaler Topics * [CppKoans](https://github.com/torbjoernk/CppKoans) ### Clojure * [4Clojure - Koans](http://www.4clojure.com) * [Clojure Koans](http://clojurekoans.com) - Clojure Koans * [ClojureScript Koans](http://clojurescriptkoans.com) * [Try Clojure](http://www.tryclj.com) ### Cloud Computing * [AWS API Gateway](https://run.qwiklabs.com/focuses/269?catalog_rank=%7B%22rank%22%3A3%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605949) - *registration required* * [AWS Identity and Access Management (IAM)](https://run.qwiklabs.com/focuses/7782?catalog_rank=%7B%22rank%22%3A6%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605942) - *registration required* * [AWS Lambda](https://run.qwiklabs.com/focuses/6431?catalog_rank=%7B%22rank%22%3A2%2C%22num_filters%22%3A1%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3605949) - *registration required* * [AWS Simple Storage Service (S3)](https://run.qwiklabs.com/focuses/7860?catalog_rank=%7B%22rank%22%3A3%2C%22num_filters%22%3A0%2C%22has_search%22%3Atrue%7D&parent=catalog&search_id=3597563) - *registration required* * [Google Cloud Platform](https://cloud.google.com/training/free-labs/) ### CoffeeScript * [Coffeescript Style Guide](https://github.com/polarmobile/coffeescript-style-guide/blob/master/README.md) * [Smooth CoffeeScript, Interactive Edition](http://autotelicum.github.io/Smooth-CoffeeScript/interactive/interactive-coffeescript.html) ### Dart * [Dart Official Codelabs](https://dart.dev/codelabs) - Dart ### Data Science * [Data Science Foundations](https://skillsbuild.org/students/course-catalog/data-science) - IBM SkillBuild *(email address required)* * [Data Science Tutorial](https://www.w3schools.com/datascience/default.asp) - W3Schools * [Essential Linear Algebra for Data Science and Machine Learning](https://www.kdnuggets.com/2021/05/essential-linear-algebra-data-science-machine-learning.html) - KDnuggets * [Top 10 Data Science Projects for Beginners - KDnuggets](https://www.kdnuggets.com/2021/06/top-10-data-science-projects-beginners.html) ### Erlang * [Try Erlang](http://www.tryerlang.org) ### Git * [git-game](https://github.com/git-game/git-game) * [git-game-v2](https://github.com/git-game/git-game-v2) * [Git Tutorial](https://www.w3schools.com/git/) - W3Schools * [Githug](https://github.com/Gazler/githug) (Tutorial in shell) * [Learn Git Branching](https://learngitbranching.js.org) * [Learn git concepts, not commands](https://dev.to/unseenwizzard/learn-git-concepts-not-commands-4gjc) - Nico Riedmann, Dev.to * [Learn Git with Bitbucket Cloud](https://www.atlassian.com/git/tutorials/learn-git-with-bitbucket-cloud) * [Try Git](http://try.github.io) * [Visualizing Git Concepts with D3](http://onlywei.github.io/explain-git-with-d3) - Wei Wang ### GLSL * [The Book of Shaders](https://thebookofshaders.com) ### Go * [Go Koans](https://github.com/cdarwin/go-koans) * [Go Tutorial](https://www.w3schools.com/go/) - W3Schools * [Learn Go](https://www.codecademy.com/learn/learn-go) - Google, Robert Griesemer, Rob Pike, and Ken Thompson (Codecademy) *(account required)* * [Start using Go](https://docs.microsoft.com/en-us/learn/paths/go-first-steps/) - Microsoft * [The Go Tutorial](http://tour.golang.org) ### GraphQL * [Apollo Odyssey](https://www.apollographql.com/tutorials/) ### Haskell * [Try Haskell!](http://tryhaskell.org) ### HTML and CSS * [CSS Diner](http://flukeout.github.io) * [CSS Speedrun \| Test your CSS Skills](https://css-speedrun.netlify.app) - Vincent Will (HTML) * [CSS Tutorial](https://www.w3schools.com/css/) - W3Schools * [Flex Box Adventure](https://codingfantasy.com/games/flexboxadventure) - Nick Bull * [Flexbox Defense](http://flexboxdefense.com) * [Flexbox Froggy](http://flexboxfroggy.com) * [Grid Attack](https://codingfantasy.com/games/css-grid-attack) - Nick Bull * [Grid Garden](https://cssgridgarden.com) * [HTML Tutorial](https://www.w3schools.com/html/) - W3Schools * [HTML Tutorial](https://www.scaler.com/topics/html/) - Scaler Topics * [Knights of the Flexbox Table](https://knightsoftheflexboxtable.com) * [Learn by doing beginner projects](https://dash.generalassemb.ly) * [Learn CSS: an evergreen CSS course and reference to level up your styling expertise](https://web.dev/learn/css/) - Andy Bell, Rachel Andrew, Una Kravets, Adam Argyle, Rob Dodson, Jiwoong Lee, et al. (web.dev) * [Learn HTML & CSS interactively](https://www.codecademy.com/learn/web) * [Prototyping a professional website](https://www.codecademy.com/learn/make-a-website) * [Responsive Web Design Certification](https://www.freecodecamp.org/learn/responsive-web-design/) - freeCodeCamp ### IDE and editors * [Interactive Vim Tutorial](http://www.openvim.com/tutorial.html) - Henrik Huttunen #### Bootstrap * [Bootstrap 5 Tutorial](https://www.w3schools.com/bootstrap5/) - W3Schools * [Bootstrap Tutorial](https://www.tutlane.com/tutorial/bootstrap) - tutlane * [Front End Development Libraries Certification: Bootstrap](https://www.freecodecamp.org/learn/front-end-libraries/bootstrap) - freeCodeCamp * [Get started with Bootstrap](https://getbootstrap.com/docs) - Bootstrap ### Java * [CodingBat code practice](http://codingbat.com/java) * [Java at Codecademy](https://www.codecademy.com/courses/learn-java) * [Java Tutorial](https://www.w3schools.com/java) - W3Schools * [Java Tutorial](https://www.scaler.com/topics/java/) - Scaler Topics * [Learn Java](http://www.learnjavaonline.org) * [Learneroo Java tutorial](https://www.learneroo.com/modules/11) ### JavaScript * [ABC of JavaScript : An Interactive JavaScript Tutorial](http://www.openjs.com/tutorials/basic_tutorial/) * [Codecademy jquery track](https://www.codecademy.com/learn/jquery) * [Functional Programming in Javascript](https://github.com/ReactiveX/learnrx) * [JavaScript Algorithms and Data Structures Certification](https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/) - freeCodeCamp * [JavaScript in 14 minutes](https://jgthms.com/javascript-in-14-minutes/) - Jeremy Thomas * [JavaScript interactive tutorial on CodeCademy](https://www.codecademy.com/learn/javascript) * [JavaScript interactive tutorial on CoderMania](http://www.codermania.com/javascript/lesson/1a/hello-world) * [JavaScript Tutorial](https://www.w3schools.com/js) - W3Schools * [JavaScript Tutorial](https://www.scaler.com/topics/javascript/) - Scaler Topics * [Javascripting](https://github.com/sethvincent/javascripting) * [Learn JavaScript](http://www.learn-js.org) * [Learn knockout.js](http://learn.knockoutjs.com) * [Learn to Code for Free – Grasshopper](https://grasshopper.app) * [Learning Advanced JavaScript](http://ejohn.org/apps/learn/) * [Try jQuery](http://try.jquery.com) #### AngularJS * [AngularJS - Step by Logical Step](http://nicholasjohnson.com/angular-book/) - Nicholas Johnson * [AngularJS Basics](http://www.angularjsbook.com) - Chris Smith * [AngularJS Tutorial](https://www.tutlane.com/tutorial/angularjs) - tutlane * [AngularJS Tutorial](https://www.w3schools.com/angular/) - W3Schools * [egghead.io: Learn AngularJS with Tutorial Videos & Training](https://egghead.io) * [Learn AngularJS with free interactive lessons](http://www.learn-angular.org) #### jQuery * [Front End Development Libraries Certification: jQuery](https://www.freecodecamp.org/learn/front-end-libraries/jquery) - freeCodeCamp * [jQuery Tutorial](https://www.w3schools.com/jquery/) - W3Schools #### React * [Front End Development Libraries Certification: React](https://www.freecodecamp.org/learn/front-end-libraries/react) - freeCodeCamp * [React Tutorial](https://react-tutorial.app) * [React Tutorial](https://www.w3schools.com/react/) - W3Schools #### Redux * [Front End Development Libraries: Redux](https://www.freecodecamp.org/learn/front-end-development-libraries/redux) - freeCodeCamp ### Kotlin * [Kotlin tutorial](https://kotlinlang.org/docs/tutorials/) * [Kotlin Tutorial](https://www.w3schools.com/kotlin/) - W3Schools * [Learn Kotlin](https://www.codecademy.com/learn/learn-kotlin) - Galina Podstrechnaya, Alex DiStasi (Codecademy) *(account required)* * [Unit 1: Kotlin Basics](https://developer.android.com/courses/android-basics-kotlin/unit-1) Android *(account required)* ### Language Agnostic * [CodeCombat](http://codecombat.com) - Python, JavaScript, CoffeeScript, Clojure, Lua, Io * [Codility](https://codility.com/programmers/) * [Introduction to the Coding Interview Prep Algorithms](https://www.freecodecamp.org/learn/coding-interview-prep/algorithms) (freeCodeCamp) * [Python Tutor](http://pythontutor.com) - Python, Java, JavaScript, TypeScript, Ruby, C, C++ * [The Fullstack Tutorial for GraphQL](https://www.howtographql.com) #### Operating systems * [Learning operating system development using Linux kernel and Raspberry Pi](https://github.com/s-matyukevich/raspberry-pi-os) - Sergey Matyukevich (:construction: *in process*) * [Operating System Tutorial](https://www.scaler.com/topics/operating-system/) - Scaler Topics * [Project eXpOS: eXperimental Operating System](https://exposnitc.github.io) - Dr. Murali Krishnan K., Department of Computer Science and Engineering of the Calicut National Institute of Technology (HTML) ### LaTeX * [Learn LaTeX in 30 minutes](https://www.overleaf.com/learn/latex/Learn_LaTeX_in_30_minutes) ### Lisp * [Lisp Koans](https://github.com/google/lisp-koans) ### Markdown * [Markdown Tutorial](https://commonmark.org/help/tutorial) - CommonMark * [Markdown Tutorial](https://www.markdowntutorial.com) - Markdown Tutorial ### MATLAB * [Interactive Tutorials for MATLAB, Simulink, Signal Processing, Controls, and Computational Mathematics](http://www.mathworks.com/tutorials) ### Node * [Node School](http://nodeschool.io) * [Node.js Tutorial](https://www.tutlane.com/tutorial/nodejs) - tutlane * [Node.js Tutorial](https://www.w3schools.com/nodejs) - W3Schools ### NoSQL * [MongoDB Koans](https://github.com/chicagoruby/MongoDB_Koans) * [MongoDB Tutorial](https://www.w3schools.com/mongodb) - W3Schools * [Try Redis](http://try.redis.io) ### Objective-C * [Try Objective-C](http://tryobjectivec.codeschool.com) ### Ocaml * [Try Ocaml](http://try.ocamlpro.com) ### PHP * [CodeCademy PHP](https://www.codecademy.com/learn/php) * [Learn PHP](http://www.learn-php.org) * [PHP tutorial](https://www.w3schools.com/php) - W3Schools ### PostgreSQL * [PostgreSQL Tutorial](https://www.postgresqltutorial.com) ### Python * [Codecademy Python course](https://www.codecademy.com/learn/python) * [Computer Science Circles](https://cscircles.cemc.uwaterloo.ca) - Centre for Education in Mathematics and Computing (University of Waterloo) * [Data Analysis with Python Certification](https://www.freecodecamp.org/learn/data-analysis-with-python/) - freeCodeCamp * [futurecoder](https://futurecoder.io) - Alex Hall * [How to Think Like a Computer Scientist: Learning with Python, Interactive Edition](http://interactivepython.org/courselib/static/thinkcspy/index.html) * [Learn Python](http://www.learnpython.org) * [Learn Python Step by Step](http://www.techbeamers.com/python-tutorial-step-by-step) * [Python for Everybody - Interactive](https://runestone.academy/runestone/books/published/py4e-int/index.html) - Barbara Ericson * [Python Koans](https://github.com/gregmalcolm/python_koans) * [Python Pandas Tutorial: A Complete Introduction for Beginners](https://www.learndatasci.com/tutorials/python-pandas-tutorial-complete-introduction-for-beginners/) - George McIntire, Brendan Martin, Lauren Washington * [Python Programming Language](https://www.geeksforgeeks.org/python-programming-language/) - GeeksforGeeks * [Python Tutorial](https://www.tutlane.com/tutorial/python) - tutlane * [Python Tutorial](https://www.w3schools.com/python) - W3Schools * [Python Tutorial](https://www.scaler.com/topics/python/) - Scaler Topics * [Scientific Computing with Python Certification](https://www.freecodecamp.org/learn/scientific-computing-with-python/) - freeCodeCamp ### R * [Learn R](https://www.codecademy.com/learn/learn-r) - Codecademy *(account required)* * [R Tutorial](https://www.w3schools.com/r) - W3Schools ### Regular Expressions * [Regex Crossword](https://regexcrossword.com) - Ole Michelsen, Maria Hagsten Michelsen * [RegExp Playground](https://projects.verou.me/regexplained) - Lea Verou ### Ruby * [CodeCademy Ruby](https://www.codecademy.com/learn/ruby) * [Ruby Koans](http://www.rubykoans.com) * [The Odin Project](http://www.theodinproject.com) * [Try Ruby](http://tryruby.org) ### Rust * [Rust Quiz](https://dtolnay.github.io/rust-quiz) * [Rustlings](https://github.com/rust-lang/rustlings) ### Scala * [A Tour of Scala - an interactive scala tutorial](https://scalatutorials.com/tour/) * [Scala Exercises](https://www.scala-exercises.org) ### Selenium * [Selenium Tutorial - Web Automation](http://www.techbeamers.com/selenium-webdriver-tutorial) ### Solidity * [CryptoZombies.io](https://cryptozombies.io) - Loom Network ### SQL * [Intro to SQL: Querying and managing data](https://www.khanacademy.org/computing/computer-programming/sql) - Khan Academy * [SQL at Codecademy](https://www.codecademy.com/courses/learn-sql) * [SQL Server Tutorial](https://www.tutlane.com/tutorial/sql-server) - tutlane * [SQL Teaching](https://www.sqlteaching.com) * [SQL Tutorial](https://www.w3schools.com/sql) - W3Schools * [SQL Tutorial](https://www.scaler.com/topics/sql/) - Scaler Topics * [SQLBolt](http://sqlbolt.com) ### XML * [XML Tutorial](https://www.w3schools.com/xml) - W3Schools