The CSS Pointers Group CSS Tips and Pointers http://www.css.nu/

css-discuss Mailing List Practical discussions of CSS and its use. High volume list. http://www.css-discuss.org/

RichInStyle.com Test cases and bug information, plus tutorials on CSS and HTML, by Matthew Brealey. http://richinstyle.com/

WebmasterWorld: CSS Forum Discussions on layout, compatibility and trouble shooting. http://www.webmasterworld.com/forum83/

W3C - Cascading Style Sheets Authoritative information from the W3C. Provides complete specifications, lists of CSS browsers and authoring tools, and information about learning CSS. http://www.w3.org/Style/CSS/

Style Sheets by Example Gives an explanation about what CSS is, examples, and sample styles. http://www.jalfrezi.com/fstyles.htm

Web Developer's Virtual Library - Cascading Style Sheets Teaches how to use CSS to improve the look and structure of HTML pages. Links discuss how to use CSS to avoid table layouts, colors, fonts, and layers. http://www.wdvl.com/Authoring/Style/Sheets/

Dive into Mark: CSS Archive of postings to Mark Pilgrim's weblog. http://diveintomark.org/archives/rooms/css/

Code Style - CSS Style Guide Includes a cross-platform font sampler, information on media stylesheets, FAQ, and a glossary. http://www.codestyle.org/css/

Eric Meyer - CSS Articles, tutorials, discussion and resources for CSS. http://www.meyerweb.com/eric/css/

About.com - Cascading Style Sheets Comprehensive guide to CSS and resources for style sheet authors. http://webdesign.about.com/cs/css/

What's new in CSS2 Overview of the CSS2 technologies and the major changes from CSS1. http://www.aboutbabette.com/css/

EServer TC Library: Cascading Style Sheets A collection of dozens of rated, reviewed online resources for developers who work with cascading style sheets in web and information design. http://tc.eserver.org/dir/CSS

Webmonkey - Stylesheets Guides and articles written between 1997 and 1999. http://webmonkey.wired.com/webmonkey/authoring/stylesheets/

DSSSL Links and historical materials from James Clark http://www.jclark.com/dsssl/