Tags Rob Schluter A downloadable list of all the tags and their attributes. This is a very useful file to have handy for even the most advanced author. Special Characters in HTML Lists all special tags. Gives a couple of examples with good ways to put these to good use. Web Communications Great list of tags and descriptions.
Every tag is listed here.
HTML Crash Course for Educators Text tags Special Tricks and explanations. Good descriptions of all the elements permitted in documents. It's kind of dated, it's from the pre 3.0 days standard but these haven't changed much. Covers everything from business to design. The Compendium of HTML Elements Excellent resource for tag explanations and demonstrations.