Webmonkey
This is a great instructional site that helps you learn how to write HTML code, use animations, templates, tables, etc. in your web pages.

Dreamweaver Tutorial
Do you need help with Dreamweaver? Use this site to learn how to work with text and templates.

Web Design Library
This site covers all theoretical and practice-oriented aspects of the effective, efficient and attractive presentation of information on-line.

CSS Properties
Looking for help with your style sheets?  This site breaks it down for you step by step.

World Wide Web Consortium
"W3C is a forum for information, commerce, communication, and collective understanding."  You can watch as web protocols are developed and learn the history of protocols like XML.