- Bash
- C
- C#
- C++
- Clojure
- CoffeeScript
- Erlang
- F#
- Git
- Go
- Haskell
- HTML / CSS
- Java
- Javascript
- Language Agnostic
- Lisp
- MATLAB
- Node
- NoSQL
- Objective-C
- Ocaml
- PHP
- Python
- R
- Ruby
- Scala
- Vim
- Githug (Tutorial in shell)
- Learn Git Branching
- Try Git
- Codecademy jquery track
- Javascript interactive tutorial on CodeCademy
- Javascript interactive tutorial on CoderMania
- Learning Advanced JavaScript
- Learn JavaScript
- Learn knockout.js
- Try jQuery
- Functional Programming in Javascript
- CodeCombat - Python, JavaScript, CoffeeScript, Clojure, Lua, Io
- Codility
- Codecademy Python course
- How to Think Like a Computer Scientist: Learning with Python, Interactive Edition
- Learn Python
- Python Koans