CSS Mastery for me is THE book on CSS. Although its old because at the time the book was written, IE7 was not officially in the market yet. It contains a lot of step-by-step solutions for common real-world css problems, along with browser gotchas and hacks when necessary. Particularly useful if you plan to support IE6 for pixel-perfect layouts.
The Zen of CSS Design for me.<p>It takes submissions to the CSS Zen garden and uses them as examples of what techniques you can use for layout, typography, images, etc<p>It suits my learning style of visual diagrams and reverse-engineering things to see how they work.<p><a href="http://www.amazon.co.uk/gp/product/0321303474?ie=UTF8&tag=newcarto-21&linkCode=as2&camp=1634&creative=19450&creativeASIN=0321303474" rel="nofollow">http://www.amazon.co.uk/gp/product/0321303474?ie=UTF8&ta...</a>
<i>Bulletproof Web Design</i> is the only CSS book I have liked enough to buy so far. Hopefully, our peers have other suggestions. I would like to learn more.
HTML with CSS and XHTML by Elisabeth Freeman & Eric Freeman seemed like a breeze to get through, and very easy to understand. I recommend starting here. But who am I!
The definitive book is Designing with Web Standards. Not all CSS per se, but it is requisite reading if you're just getting into the whole CSS-based design thing.<p>That book goes hand in hand with Eric Meyer on CSS.
Not a book, google.<p>CSS is such an evolving art - browser inconsistencies and their related hacks are constantly changing, and best practises are continually being developed.<p>It seems ironic to me that you would revert to using dead-tree media for instruction on how to style the cutting edge. If you simply need an introduction to css then w3schools can't be beat.<p>Oh, and I also own zen of css design, which is pretty good if you must have a physical book.
Not a book, but I would highly recommend a web dev. plugin for Firefox such as Firebug that lets you view CSS attributes on every element in a page, as well as edit the CSS and see live changes.
Handcrafted CSS: More Bulletproof Web Design (Rough Cuts)<p>Flexible Web Design: Creating Liquid and Elastic Layouts with CSS (Just released)<p>Trascending CSS (Released)<p>Learning the Yahoo! User Interface library: Develop your next generation web applications with the YUI JavaScript development library (Released, for yui and some javascript)<p>I want them but don't have money.<p>Have a look at OOCSS:
<a href="http://wiki.github.com/stubbornella/oocss" rel="nofollow">http://wiki.github.com/stubbornella/oocss</a><p>And CSS Discuss:
<a href="http://css-discuss.incutio.com" rel="nofollow">http://css-discuss.incutio.com</a>
CSS: The Missing Manual was a great starting point for me. I still use it as a reference but I mostly just find things on the web. Smashing Magazine has some good stuff -- <a href="http://www.smashingmagazine.com/category/css/" rel="nofollow">http://www.smashingmagazine.com/category/css/</a>