The Guhyagarbha Tantra - Secret Essence Definitive Nature Just As It Is — by Longchenpa
This Secret Essence Tantra is the most advanced and extensively studied tantra within the Nyingma lineage. The author includes complete explanations of the peaceful and wrathful mandalas as well as practical instructions needed to attain the four states of vidyadharahood.
Gampopa Teaches Essence Mahamudra - Interviews with his heart disciples, Dusum Khyenpa and others
The two volumes collectively contain all of the "Interviews" section of Gampopa's Collected Works. These are amongst the most interesting writings to be found in Tibetan literature because of the very personal quality found in them.
Golden Letters - The Three Statements of Garab Dorje, First Dzogchen Master
The teachings of Dzogchen, which directly introduces the practitioner to the Nature of Mind, first expounded by Garab Dorje in the country of Uddiyana and later went to India and Tibet.
Dispeller of Obstacles - The Heart Practice of Padmasambhava
This is the heart essence of the accomplished master Padmasambhava who perceives the three times in the entirety.
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 Essence of Buddhism - An Introduction to Its Philosophy and Practice — by Traleg Kyabgon
This lucid overview of the Buddhist path takes the perspective of the three "vehicles" of Tibetan Buddhism: the Hinayana, Mahayana, and Vajrayana.
Ninth Karmapa, Wanchuk Dorje's Ocean of Certainty — by Traleg Kyabgon Rinpoche
Traleg Kyabgon Rinpoche's commentary to the sixteenth century work Pith Instructions of Coemergent Wisdom, Entitled the Profound Essence of the Ocean of Certainty , by the Ninth Karmapa - Wangchuk Dorje.
Yeshe Lama - From the Heart Essence of the Vast Expanse of the Great Perfection, the Instructions on the Stages of the Path to the State of the Original Protector, Called the Primordial Wisdom Lama — by Vidyadhara Jigmed Lingpa
This is the most important practice manual on the Great Perfection teachings of the Nyingma tradition.
Heart Lamp - Lamp of Mahamudra and Heart of the Matter — by Tsele Natsok Rangdrol
This book main idea is that intrinsic to the heart, mind and spirit in every human being is an identical essence which can be realized. This realization makes any man or woman a Buddha.
Mahamudra - The Quintessence of Mind and Meditation — by Dakpo Tashi Namgyal
Mahamudra meditation is simultaneously the most profound of meditative disciplines and most accessible for modern practitioners. Traditionally passed orally from teacher to disciple, mahamudra instructions point the meditator to the innate perfection of every experience.