Bernie Clark's The Complete Guide to Yin Yoga
Complete Guide To Yin Yoga, Yin Yoga: The Philosophy And Practice Of Yin Yoga ; Bernie Clark
Results of our analysis:
We analyzed 5,120 reviews for 28 products in the Acupuncture & Acupressure Books category.
We then analyzed 38 reviews for this product. Of these, 21 reviews were recent.
Around 89% of reviews were positive and about 11% were negative.
Final Score:

9.59 out of 10, based on these factors:
What buyers say about Bernie Clark's The Complete Guide to Yin Yoga
If you have a single book on the shelf about Yin Yoga, you could do a lot worse.
If you want to teach yoga, you only need to practice the cues of the yoga you are learning in this book, and that is all you need, if you have other yoga training and insurance.
It's well written and has a comprehensive illustrated section on 25. If you have only one book on the shelf about Yin Yoga, you could do a lot worse than this one.
My book has become well loved because of the worn cover, marked pages, highlights and so on, it will stay ok on my shelf for future reference.
A good overview but not much. A description of the structure of a Yin session but not much.