Web Accessibility and Usability

>> What Is Web Accessibility? - A List Apart Article

>> W3C Web Accessibility Initiative

>> useit.com: Jakob Nielsen on Usability and Web Design

CSS Help

>> CSS Web Standards Software and Learning

>> W3C CSS 2 Reference

Associations and Standards

>> World Wide Web Consortium (W3C)

>> World Organization of Webmasters

Wordpress and Open Source

>> Unmatched Style: Wordpress Designs

>> Wordpress Theme Viewer

>> Open Source Web Design (oswd)

Web Design Reading

Blogs

>> A List Apart

>> Web Standards Project

>> Web Design Ledger

In Print

>> .net (magazine)

>> CSS Pocket Reference
by Eric A. Meyer (book)

>> CSS Mastery: Advanced Web Standards Solutions
by Andy Budd (book)

>> Bulletproof Web Design: Improving flexibility and protecting against worst-case scenarios using XHTML and CSS
by Dan Cederholm(book)

>> Don't Make Me Think: A common sense approach to web usability, 2nd Edition, by Steve Krug (book)

>> Head First: HTML with CSS and XHTML by Eric Freeman. (book)