Well, I don't have CRPS, but my fiancee does... We got and worked through the Graded Motor Imagery Handbook, which contained a lot of information about CRPS and chronic pain. A predecessor of sorts to this book is called "Explain Pain" and "Painful Yarns." We've read through Explain Pain which is more broadly related to pain in general... Haven't read Painful Yarns, but I've heard its very good as well...

Interestingly, I've read some research that indicates that education about pain itself can help reduce pain. This has certainly been the case for my fiancee. She is more or less in remission now, but every now and again she'll have a little bout of pain. Her ability to understand what her body is doing gives her a sense of control that prevents catastrophization and really helps her get through those pain times, which, thankfully, are becoming less and less frequent.

Here are some links to these books:

http://www.amazon.com/The-Graded-Mot.../dp/0987246755

http://www.amazon.com/Explain-Pain-D...ref=pd_sim_b_1

http://www.amazon.com/Painful-Yarns-...ref=pd_sim_b_1

Hope they help!