HTML SOURCES

W3schools -Guide to XHTML

Case Western Reserve- This is an excellent all round
HTML guide site with tutorals and other helpful web
info.

HTML Tutor provided by
Maricopa Center for Learning and Instruction (MCLI)
Maricopa Community Colleges
URL: http://www.mcli.dist.maricopa.edu/tut/

HTML Barebones guide byKevin Werbach
The HTML Guide
There is a text version for printing and a zip of the HML.
This is a concise and complete reference to syntax of HTML 4.0.
 

HTML Course by TrainingTools.Com.  Very nice Course materials

HTML 2000 Guide. A concise guide of HTML topics

HTML FAQ Web Design Ggroup - a very good answer to many HTML questions