This commentary serves as a companion to the concise practice text entitled Red Tara: An Open Door to Bliss and Ultimate Awareness compiled by His Eminence Chagdud Tulku Rinpoche (1930-2002). The concise practice is based on an extensive Red Tara practice that is part of the Apang Terton cycle of revealed treasures. The commentary is intended to serve as a manual that guides the meditator through the steps of the practice, explaining their meaning and offering instructions. It was written with the authorization and under the direction of Chagdud Rinpoche, who established Red Tara meditation as a main practice in all his dharma centers. Red Tara practice has since become a profound source of spiritual inspiration for thousands of people all over the world.