Book 2: the Vedic Yoga of Indra is a sequel to Traditional Yoga: Book 1, Insights into the Original Yoga System and leads on from Book 1 to discuss the deeper application of the Vedic Yoga of the god Indra with relation to later Tantra as also discussing the correlation of later Puranic and Tantric deities and practices from the Rig Veda onwards. There is special reference in this book with regards to the Dasha Mahavidya, the Ten Great Wisdom forms of the goddess Kali and their Vedic counterparts, complete with hymns from the Rig Veda.