When looking for books on Yoga, I had no idea where to start and I didn't want to read some...American trying to cash in book. I saw this book and it seemed real. Wow, I'm glad this is the first book I read on Yoga. Georg Feurstein fully knows and understands the essence of Yoga. The book touches on everything from the history of Yoga to a Yogi's diet. I like how Feurstein always refers back to the old Sanskrit texts of Yogi practices. However, if you are looking for a book where you actually do the postures then look for another book because this book doesn't satisfy that. You should read all you can about Yoga before attempting it, I know my presumptions on Yoga have been changed from reading this book.