Deciding what rating to give this book left me a bit conflicted. Several of these recipes are excellent - healthy, simple, inexpensive and loved by every dog I've given them to. That alone seems to be plenty of reason to get your hands on this book.
Unfortunately, those shining stars comprise only a fraction of the book. Many of the recipes contain ingredients of impractical expense or questionable safety. I'm sure that my dog would love liver and salmon pates, but I doubt that I'm the only reader who finds such ingredients out of the budget for puppy treats. As for safety, a surprising number of the given recipes contain cheese and other dairy ingredients which dogs are not intended to digest. Although they probably won't do any harm in small amounts, I would not advocate making them a regular part of your pet's diet.
My ultimate suggestion is that you get your hands on a physical copy of this book, either through your library or a local bookstore, before you decide to buy. It's best to flip through it and discern for yourself whether it's useful and appropriate for your needs and your dog's diet.