The yoga book is a core text, it explains the true meanings of Yoga, and demonstrates the practices and postures of Ashtanga Yoga that will enable the reader to achieve mastery over the mind and body, and can lead to self realization.
Kriyananda (born James Donald Walters; May 19, 1926, Azuga – April 21, 2013, Assisi) was a direct disciple of the yogi Paramahansa Yogananda, and the founder of the Ananda, a worldwide movement of spiritual intentional communities based on Yogananda's World Brotherhood Colonies ideal. Yogananda made Walters a minister for his organization, Self-Realization Fellowship (SRF).