The Zen of CSS Design for me. It takes submissions to the CSS Zen garden and uses them as examples of what techniques you can use for layout, typography, images, etc It suits my learning style of visual diagrams and reverse-engineering things to see how they work. http://www.amazon.co.uk/gp/product/0321303474?ie=UTF8&ta...
Heh, never even knew there was a book for http://www.csszengarden.com/ (or was it that the garden was for css zen), still I probably got the most from doing little zengarden mock-ups; ya know sort of like a time-trial. . .[ramble]. . .Coming to back to the web to the without tables was probably my biggest hurdle, but doing enough stuff in the spirit of zengarden really helped out.
These day though I find myself having a harder time getting inspired to start something fresh in Photoshop than anything in my text-editor. Once you stop thinking and developing in terms of a graphics editor you will start seeing and thinking in terms like this, how do I want my user to interact with this document?
I honestly couldn't really recommend a book though, CSS doesn't necessarily require a text to understand how to format a hyper-text document, other than that, I don't think there isn't much else I could recommend besides just dive into an xhtml document and start formatting your view according to something that catches your eye on the web.
Cheers