Based on the Teachings of Paramhansa Yogananda. Kriya Yoga is an ancient and powerful technique of liberation, transformation and illumination. It has been taught over the centuries by the greatest yogis and was introduced in the West in our time by the great master Paramhansa Yogananda, who described it in his ''Autobiography of a Yogi'' as ''the airplane route'' and ''the easiest, most effective and most scientific way to approach the Infinite.'' This book presents the many facets of Kriya Yoga in a complete and accessible way for the first time: from its history to its philosophy, to the subtleties of the practice to how to prepare for initiation. It is an invaluable text for all those who wish to learn or to deepen their understanding of this ancient science, kept secret for so long. And not only that, it is a treasure trove of practical tools and techniques for all who wish to delve into the wonderful adventure of the inner journey!