This book is the result of over three years of research by over thirty contributors. Here is a complete guide to Yantra, Mantra and Tantrism. It explores ancient vedic texts, the quantum world, sacred geometry, and the effects of Tantric practices on brain states. The creation of Yantra is clearly explained, as well as the types and uses for Yantra. Also included are useful guides on how to obtain genuine Yantra, both from online sources as well as locations in India. Complete with over thirty image scans of genuine Yantra, it will prove an indispensable guide for anyone interested in this fascinating subject.