add new learning resources

[afknapping]

ticket for collecting good tutorial and reference resources which should be included (instead of opening a new issue for each one)

HTML and CSS

• CSS Diner - Where we feast on CSS Selectors!
• Learn CSS Layout
• CSS Design: Taming Lists (A List Apart)
• CSS Floats 101 (A List Apart)
• Learn HTML & CSS - a book that teaches you in a nicer way

  Git & Github

• Interactive Git Cheatsheet
• GitHub Flow in the Browser
• GitHub Guides
• waffle.io – Kanban by Github Issues

  Terminal

• explainshell.com - match command-line arguments to their help text

  Try all the things

• http://try.github.io/ (is in there somewhere already)
• http://tryruby.org/
• http://sqlzoo.net/
• http://www.tryerlang.org/
• http://tryhaskell.org/

[salzig]

ah… :+1: