Design Basics
Web Page Design for Designers
Web Style Guide
Web Wonk

HTML, DHTML, & Beyond
Bare Bones Guide to HTML
Builder.com
Developer Shed
DevX - Web Development
Dynamic Drive
HTML Goodies
HTML Station
HTML tag reference
Table Tutorial
Web Design Group: HTML Help
WebDeveloper.com
Web Developer's Library
Webmonkey
WebReference.com

Cascading Style Sheets
HTML Goodies: CSS Tutorials
Mulder's Stylesheets Tutorial
WebMonkey Stylesheet Guide
WebReference Cascading Style Sheets
WDG Cascading Style Sheets

Color Information
HTML Background Selector
Color Palette
Visibone Color Lab

Graphics
Boogie Jack's Backgrounds, Textures, and
Left Borders
CoolText
Free Graphics by Syruss

Other
Search Engine Watch
Think Quest
Web Teacher
World Wide Web Consortium