If you are a motivated, but overstressed, time-crunched person...someone who knows you should exercise more, stretch more, take better care...this book is a blessing. It won't gather dust on your shelf next to the other books on yoga, stretching, meditation, etc.
The routines are easy to understand, easy to do, and modelled by regular folks, so you don't end up feeling like a total loser because you can't do the poses like the yoginis in other books.
To show you what you can strive for in terms of good technique, the author of the book models poses in a later chapter. But most of the book gives short, easy routines that can help you gain flexibility day by day, or treat acute problems in a hurry.
They broke a lot rules making this book. It doesn't look like most other yoga books. But the result is fresh and totally worthwhile. As a naturopathic doctor, this is one I will recommend to my patients who want to get into some healthier habits, a little bit at a time.