This Bhakti Master Class series is a detailed, verse-by-verse study of Śrī Bhakti-rasāmṛta-sindhu. We know Bhakti-rasāmṛta-sindhu in the West as The Nectar of Devotion, by A. C. Bhaktivedānta Swami Prabhupāda, which is a summary study of the original work. This series is based on an edited version of a translation of Śrī Bhakti-rasāmṛta-sindhu by my Godbrother Bhānu Svāmī. It includes two important commentaries, one by Jīva Gosvāmī and another by Viśvanātha Cakravartī Ṭhākur, that illuminate the intended meaning of the text. The primary subject of Bhakti-rasāmṛta-sindhu is rasa-tattva. Tattva means a division of knowledge or a certain set of truths. The Vedas describe various tattva such as jīva-tattva, viṣṇu-tattva and śakti-tattva, but the most important tattva is rasa-tattva because it completely describes the field of possible relationships between the soul and the Lord.