Helpful CSS Links

Books
W3.org
W3Schools.com
CSS Directories
Videos
Guides & Tutorials
Browser Add-ons/Extensions

Books (Links got to Amazon.com)
- Bulletproof Web Design - Design pages that even IE 6 can't break
- CSS Mastery: Advanced Web Standards Solutions - Some tips in here I haven't seen anywhere else.
- CSS: The Missing Manual - Comprehensive for beginners as well as advanced
- HTML, XHTML, and CSS - Good foundation book
- The Principles of Beautiful Web Design - Web Design for people with no art or design background
- Pro CSS Techniques - Intermediate to advanced. Stresses creating semantic markup
- Transcending CSS: The Fine Art of Web Design - CSS that works now --and even better in the future
- The Zen of CSS Design: Visual Enlightenment for the Web - Inspirational
W3.org
- Cascading Style Sheets home page
- Validate CSS and (X)HTML documents with style sheets
W3Schools.com
CSS Directories
- CBEL Style Sheets - Extensive directory of CSS resources
- CSS Property Index - Alphabetical listing of CSS syntax and properties.
Videos
- CSS Online Training Library
Guides & Tutorials
- Cascading Style Sheets - From Wikipedia, the free encyclopedia
- Complete CSS Guide
- CSS Guide for the Unglued - Links to every CSS resource you could possibly need.
- CSS Tutorial -teaches CSS using hand-coding
- CSS Zen Garden
- Fix Your Site With the Right DOCTYPE!
- Selectoracle
- Web Design Group - Guide to CSS
- User Agent (Browser) Style Sheets
- Global Resets for browser default styles
Browser Add-ons/Extensions
- HTML VALIDATOR (based on Tidy and OpenSP) «NEW!
  HTML Validator is a Mozilla extension that adds HTML validation inside Firefox and Mozilla. The number of errors of a HTML page is seen on the form of an icon in the status bar when browsing. The details of the errors are seen when looking the HTML source of the page.
- The extension is based on Tidy and OpenSP. Both algorithms were originally developed by the Web Consortium W3C. And now extended and improved by a lot of persons. Both algorithms are embedded inside Mozilla/Firefox and makes the validation locally on your machine, without sending HTML to a third party server.
- The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox, Flock, Mozilla and Seamonkey, and will run on any platform that these browsers support including Windows, Mac OS X and Linux.
- The NoScript Firefox extension provides extra protection for Firefox, Flock, Seamonkey and others mozilla-based browsers: this free, open source add-on allows JavaScript and Java execution only for trusted domains of your choice (e.g. your home-banking web site). NoScript optionally blocks Flash and other potentially exploitable plugins too, and provides the most powerful Anti-XSS protection available in a browser.