Vijnana Bhairava Tantra
Vijnana Bhairava Tantra is a part of Rudra Yamala Tantra which again belongs to the category of Bhairava Agamas. This is a Jnana Tantra which contains one hundred and twelve meditation techniques as different from outer rituals prescribed by other Tantras. The techniques taught by many gurus of today in all mystic schools are found in the list of these 112 methods.
We find the practitioners of these techniques more in East and North of India than in the South. Especially for the followers of the Trika system of Kashmir Shaivism, this book is a favourite. There are many commentaries available on these verses. Nevertheless, I too have tried to explain them in the light of my understanding and experience.