University of Pennsylvania hosts this architectural resource, which includes an introduction to the purpose of the yantra.

Learn about the diverse and rich spiritual tradition of Tantra. Includes texts to this Hindu branch's sacred scriptures.

Encyclopedia article overviews this Buddhist and Hindu technique of increasing psychosexual energy.

Ron Turner offers a brief introduction to the origins and precepts of Hindu and Buddhist Tantrism.

Professor O.M. Mathew of the School of Indian Legal Thought details the ritualistic revival in Hinduism and Christianity.