I am surprised at the low reviews for this book. I have been diagnosed with BDD and I've found the ideas and exercises contained in the book to be very useful, although I do still think it's better to have the extra support of a therapist to keep you focussed.
The book contains plenty of information on the causes and effects of BDD and it's really hands-on, in that there are lots of worksheets that will get you thinking and more importantly, taking action. One of the autors, Dr Claiborn, also contributes to the forum at bddcentral.com.
The only reason I've given this book 4 stars instead of 5 is that the chapter on self esteem got me a bit lost and the book ended abruptly. Nonetheless, these are minor points and in my opinion, this book is thoroughly recommended.