A List Apart: Articles: Get Ready for HTML 5
With support in Chrome, Firefox 3.5, Opera, and Safari, HTML 5 is coming at you like a runaway train. Here are some suggestions to help you prepare to get on board rather than be left at the platform or tied to the tracks.
Just when we thought the dust had settled in the move to accept XHTML as the standard for clean, compliant code, up pops HTML 5. I have been curious about the new tags and how to use them, so this article from A List Apart is very handy in outlining the differences and offering suggestions on experiments to try on your own.