Jonathan Snook has written up a book review of a recent Packt Publishing book "CakePHP Application Development".
The folks at Packt were kind enough to send me a copy and it turned out to be a fairly quick read. It's 300 pages of good starting knowledge. The book is targeted as an introduction to the framework and not meant as a definitive guide (to which the book would likely need to be three times the size to accomplish).
He details some of the contents of the book (not chapter by chapter though) and some of the things that did and didn't work.