Srividya is discipline where abounds considerable mystery, esotericism and occultism. There is among common people quite some ignorance concerning its philosophy and practice. There is also a host of doubts and uncertainties among practitioners themselves. The presence of different tradition in Srividya is a further source of confusion. The textual background to Srividya has almost become obscure and obsolete; it has become more a matter of individual lineages of practices. In the circumstances there is a need for an authentic and comprehensive account of all three aspects of Srividya, viz. The Yantra, The Mantra and the Tantra. This Book is an attempt to provide one.