This document provides an introduction to the book "Saithree Manthra, Yanthra, Thanthra" which is dedicated to Bhagavan Shree Sathya Sai Baba. The book addresses how to live in Sai consciousness through the use of three Sathya Sai Gayatri mantras known as "Saithree", the Sathya Sai Chakra or yantra, and Sai tantra. It discusses Bhagavan Sathya Sai Baba's divine qualities and teachings of love and service. It also briefly describes the spread and impact of the book since its publication.