Rinpoche's commentary on the instructions on the "Preliminaries to the Great Perfection Teaching" contains the classical Nying-ma presentation of the Dzogchen preliminaries and practices that lead to Buddhahood. It is an oral commentary on Patrul Rinboche's Kunzang Lamai Shelung (Words of My Perfect Teacher). "The Recitation of the Preliminaries to the Heart Essence of Vast Openness Illuminating the Good Path to Omniscience" by Jigme Lingpa is included.