This brief work on Kriya Yoga introduces one of the best yoga disciplines extant today. Efforts have been made to make it comprehensive, and because it is one of the best, some aspects of its processes are kept secret, simply to prevent it from suffering any modifications. For those who are interested in pursuing a deeper study of Kriya Yoga they can always communicate with the Self-Realization Fellowship in Los Angeles, California, or with the Yogoda Satsanga Society of India in Bihar, India.