Countless Kriya Yogis, tracing their lineage back to Lahiri Mahasaya, have continued to disseminate the ancient practice of Kriya Yoga to new disciples in India and the West. However, through a combination of miscommunication and intentional alterations, much of what is taught as Kriya Yoga today is far from what was originally taught, often to the detriment of sincere practitioners. In this short, practical, and experiential guide, Sri Mukherjee reveals some key points of the original Kriya Yoga, as taught by Lahiri Mahasaya to his disciple Swami Pranabananda, which was passed down to Sri Mukherjee. What is made available here has not been altered through the distorting effects of formal organizations (which Lahiri Mahasaya and Swami Pranabananda both eschewed), but comes through guru-to-disciple transmissions. Fearing the loss of the original Kriya Yoga as taught by Lahiri Mahasaya, Sri Mukherjee has generously written this book in order to record and to share this most valuable of all human knowledge. Sri Mukherjee is the disciple of Shri Gyanendranath Mukhopadhyay, who was the author of Pranab Gita. Pranab Gita was compiled and written from meetings that Shri Mukhopadhyay had with his guru Swamiji, who was, in turn, the disciple of the revered Lahiri Mahasaya. This book, along with other volumes by Sri Mukherjee, explains Kriya Yoga and builds on the website at www.originalkriya.org.