Not sure how long this will last… The publisher published the whole mini-book as the "excerpt chapter." Oops. They’ll probably correct that fairly soon so grab a "preview copy" while you can.
If you find the book useful, you really should give Wrox its $7. At least send the author some link love if you download it: http://www.dimebrain.com/. Dimebrain is a good read (Dimebrain blogger Daniel Crenna was a guest on Devcasting in September).