W3C HTML5 规范： http://www.w3.org/TR/html5/
HTML5 与 HTML4的差异：http://www.w3.org/TR/html5-diff/
Opera dev: Improve your forms with HTML5： http://dev.opera.com/articles/view/improve-your-forms-using-html5/
Comparison of layout engines（HTML5）：
http://en.wikipedia.org/wiki/Comparison_of_layout_engines_(HTML_5)
HTML 5 中的新元素：http://www.ibm.com/developerworks/cn/xml/x-html5/
如何在 IE 中使用 HTML5 元素 http://www.planabc.net/2009/06/13/how_to_use_html5_elements_in_ie/
Preparing for HTML5 with Semantic Class Names http://jontangerine.com/log/2008/03/preparing-for-html5-with-semantic-class-names
A great beginning overview of HTML 5 Yes, You Can Use HTML 5 Today!
A basic overview from Wikipedia Wikipedia: HTML 5
A great quick guide to HTML 5 as a printable PDF HTML 5 Cheat Sheet
A great set of demos. Just view the source to see how they work. HTML 5 Demos
An example of how to use Drag-n-Drop in HTML 5 HTML 5 Drag and Drop + Microformats = a whole world of possibilities
See what’s possible with HTML 5 HTML 5 Gallery
A powerful demo of how forms work in HTML 5 HTML 5 Forms Demo
A great general resource on HTML 5 HTML 5 Doctor
A good article from HTML 5 Doctor on the Header element Headers in HTM 5
A useful article from HTML 5 Doctor on the Video element Video elements
A tutorial on how to build a blog in HTML 5 Designing a blog with html5
Another great article from HTML 5 Doctor How to get HTML5 working in IE and Firefox 2
The whole spec, in all it’s scary technical