The Crystal Mirror - Clearly Showing All The Steps By Which The Path Of Liberation Is Traversed In This Fortunate Kalpa — by Kalu Rinpoche

Teaching on the Kagyu Mahamudra preliminary practices, given by Rinpoche during the Kalachakra initiation in the early eighties in New York.

Ngondro Commentary - Instructions for the Concise Preliminary Practices of the New Treasure of Dudjom

A practical and accessible guide for students to use in directly engaging the preliminary practices, which establish the foundation for the entire Vajrayana path.

The Jewel Ladder - A Preliminary Nyingma Lamrim — by Gyurme Dorjee

This commentary by Khamtrul Rinpoche given in simple and lucid language unravels the gist of Rin-chen them-skas.

The Words of my Perfect Teacher — by Patrul Rinpoche

Classic commentary on the preliminary practices of the Longchen Nyingtig - one of the best-known cycles of teachings and a spiritual treasure of the Nyingmapa school - the oldest Tibetan Buddhist tradition.

Guru's Heart Practices - Texts for Dispeller of Obstacles  — by Padmasambhava

This extensive cycle contains teachings and practices for the preliminaries up to and including Dzogchen.

Guru Yoga - According to the Preliminary Practice of Longchen Nyingtik — by Dilgo Khyentse Rinpoche

This particular guru yoga is called "The Wish-fulfilling Jewel" and it is the outer practice of the guru from the Longchen Nyingtik revelation of Rigdzin Jigme Lingpa.

The Excellent Path to Enlightenment - Oral Teachings on the Root Text of Jamyang Khyentse Wangpo — by Dilgo Khyentse Rinpoche

This book explains a key practice text composed by Jamyang Khyentse Wangpo (1820–1892) on the Vajrayana preliminaries.

The Dzogchen - Innermost Essence Preliminary Practice — by Jigme Lingpa

This is not only a preliminary practice but actually provides a complete means in itself for attaining the fully awakened state.

The Torch of Certainty — by Jamgon Kongtrul

This translation of a fundamental Tantric text reveals the richness and profundity of the intellectual and contemplative traditions of Tibetan Buddhism. The text describes the Four Foundation Practices that all practitioners of Vajrayana Buddhism must complete.

The Gem Ornament of Manifold Oral Instructions — by Kalu Rinpoche

This book contains fourteen chapters dealing with aspects of the path to enlightenment as explained by His Eminence Kalu Rinpoche. The perspective is Buddhist in general, with teachings from the scriptures of the Theravada, Mahayana, and Vajrayana traditions.