CSS transition timing functions
A neat visual demonstration of the the different timing functions for CSS transitions. Non-animators may not be familiar with these, so it’s helpful to see what they look like.
Using CSS3 Transitions, Transforms and Animation
Rich Bradshaw has a page with some examples of CSS transitions and animations. Succinct and well explained. Make sure you also check the official docs and do your own research on top of any tutorial you read. It’s still the early days for HTML5 and CSS3; things change, both in spec and in implementation.
A Form of Madness
Mark Pilgrim goes into some really cool new form features in HTML5. Spoiler: placeholder text (“Enter your name here…”) is now an out-of-the-box feature.
WebKit CSS Properties
A cheat sheet for webkit-implemented properties. Simple and easy to read; for more info, don’t miss the ultimate resource: Apple’s Safari Dev site.
A slideshow on HTML5 using HTML5.
HTML5 for Web Designers
Early reviews say that this guide from A List Apart is excellent. $18, Ships in June.