Web Developer's Virtual Library, an overview of Cascading Style Sheets.
Webdeveloper.com's Guide to Cascading Style Sheets by Scott Clark
HTML with syle: Separate Structure and Presentation from webreference.com.
Ask Doctor Web about Cascading Style Sheets.
Cascading Style Sheet Tutorials by Page Resource.com.
W3C guidelines to CSS Techniques.
Resources for CSS by Web Standards.
Web Standards Baseline Proposal for CSS standards to be used by browsers.
WebReview.com's Style Sheet Reference Guide by Eric Meyer.
CSS Design by Christopher Schmitt
Opera 7.0 browser.
Why you need style sheets and the fear behind using CSS by Jeffrey Zeldman and Brian Platz.
The Case Western Reserve Site for Cascading Style Sheets.
Chapter 9 pages 270-315
Chapters 13-16 pages 239-290