Finally got around to reading this. Amusing and somewhat instructive.

Nearly sixty years have elapsed since I was first introduced to Part I of Book 4, Crowley's first little masterpiece on Yoga. It thoroughly debunked the entire subject and then laid down some firm notions as to what Yoga consisted of without the usual claptrap found in the work of those who should know better. That little book has actually become a classic. If it is not now so regarded by some of his over-critical enemies, the passage of time will undoubtedly make it so.-Israel Regardie

With humor and penetrating wisdom Crowley has produced a work which should uplift the heart of all enthusiastic students of Yoga. I originally received this book as a gift from Israel Regardie in 1975. It has been my constant companion.-Christopher S. Hyatt

This book is timeless. Aleister Crowley has masterfully translated the Eastern method and tradition of Yoga into a form easily understood by the Western Mind. I highly recommend this book to the neophyte and adept alike.-Baron Peter von Gundlach

Contents

Yoga for yahoos
First lecture First principles
Second lecture Yama
Third lecture Niyama
Fourth lecture Asana and pranayama
Yoga for yellowbellies
First lecture
Second lecture
Third lecture
Fourth lecture