Look in The Cat Site's Shop page. Anne has quite a few books highlighted that come highly recommended. And, if you click on the link from here and order it that way, The Cat Site gets credit for you using a sponsor click. (Shameless plug, you know.) I was looking at a few last week and Think Like a Cat, and Hiss and Tell both looked really interesting to me. I have Cats for Dummies, too, and looking at it now I think I've learned most of what they have in it on here, and more than they have in the book too!