Current and recent web design and technology classes, self study and seminars: CSS
Summer 2010 advanced CSS class at Solano Community College. There is always something fun, new, and interesting from fellow students. Our textbook, stylin' with CSS, was published in 2007. However I recommend it for exercising the basics (even for folks who know css) to read, understand, and practice every item.
Cascading Style Sheets World Wide Web Consortium (W3C)
CSS3 Template Layout Module W3C Working Draft 2 April 2009
DWWS 3E October 10, 2009 Jeffrey Zeldman. Readers say this is more of a seasoned coder's book, geared toward Why certain methods should be done.
Handcrafted CSS: More Bulletproof Web Design, Video Edition Aug 20, 2009 Dan Cederholm. Some of this material is culled from the Bulletproof Web Design book; advanced CSS and CSS3 properties that work in browsers today, to reevaluating past methods and best practices. This book will show how craftsmanship can be applied to flexible, bulletproof, highly efficient and adaptable interfaces that make up a solid user experience.