The *Narada Bhakti Sutra* is a classical text attributed to the sage Narada, one of the most prominent figures in Vaishnavism and spirituality. This text is a collection of aphorisms or sutras that delve into the concept of bhakti (devotion) as a means to achieve devotion to Shri Krishna.

"Raja-Vidya" by A.C. Bhaktivedanta Swami Prabhupada is a profound exploration of the principles of Bhakti Yoga, a spiritual practice rooted in devotion and love for the divine. The book delves into the teachings of the Bhagavad-gita, presenting them in a way that is accessible and inspiring for readers seeking spiritual growth. Swami Prabhupada's clear and insightful commentary helps readers understand complex philosophical concepts and apply them to their daily lives. The book emphasizes the importance of living a life of devotion, humility, and service, offering practical guidance on how to cultivate these qualities. Overall, "Raja-Vidya" is a valuable resource for anyone interested in deepening their understanding of Bhakti Yoga and the timeless wisdom of the Bhagavad-gita. It serves as both an introduction for newcomers and a deeper study for seasoned practitioners.