Helpful Resources
The W3C on HTML:
This is the definitive on-line reference for HTML and XHTML
W3Schools:
A collection of free HTML tutorials with lots of working examples and source code.
HTML Validator:
A free service that checks HTML Web documents for conformance to W3C HTML Recommendations.
W3C & Style Sheets:
Published guidelines for working with HTML Style Sheets. Website contains a great deal of useful information.