Steps to the Great Perfection: The Mind Training Tradition of the Dzogchen Masters, by Jigme Lingpa

Excerpts from:
The Tantra of the Sole Offspring
The Secret Commentary on the Tantra of the Sole Offspring, by Garab Dorje
The Seven Mind Trainungs, by Longchen Rabjam
The Steps to Liberation, by Jigme Lingpa