Updated April 9, 2015

Samples

Class samples are collected on CodePen.

Additional Resources

Education

Mozilla Developer Network - HTML and CSS documentation
W3Schools - HTML and CSS tutorials and quizzes
CSS Tricks - CSS Tips and Tricks
Shop Talk Show (podcast) - Discussion around web-related topics
HTML5 Canvas Tutorials - Live scripting of canvas elements

Design

Responsive Web Design (podcast) - Interview with web designers
WorkWithColor.com - Color selection tools and articles

Tools

Code Pen - Online experimenting with HTML, CSS, and JavaScript
JSFiddle - Online experimenting with HTML, CSS, and JavaScript
WebStorm - JavaScript IDE and HTML editor
Inkscape - Free vector graphics editor for Windows, Mac, and Linux

Reference

Can I Use... - HTM5 and CSS3 browser compatibility information

Resources

Google Fonts
Font Squirrel - Free web fonts and font file conversion