The secrets of the occult sciences of Yantra, Mantra and Tantra to help the reader achieve worldly success and spiritual enlightenment. Detailed instructions are given for the preparation and application of Yantras for specific purposes: to win favours, defeat enemies and cure diseases, among others. The methods of selecting and using Mantras to attain miraculous powers, and fulfilment of one's desires, are explained in detail. In the Tantra section of the book, methods of treatment of diseases by herbs are given.