Nagarjuna's Letter to a Friend — with commentary by Kyabje Kangyur Rinpoche
Master Nagarjuna wrote this celebrated poem as a gift of advice to a South Indian king, and it has since become a monument in the Indian shastra tradition. It covers the entire Mahayana path, combining a practical approach to daily conduct with a theoretical exposition of the different stages leading to enlightenment.
A Spacious Path to Freedom - Practical Instructions on the Union of Mahamudra and Atiyoga — by Karma Chagme, with commentary by Gyatrul Rinpoche, translated by Alan B. Wallace.
This manual of Tibetan meditation simply and thoroughly presents the profound Dzogchen and Mahamudra systems of practice. It is incomparable introduction to the actual practice of higher meditative instructions.
The Mahamudra - Eliminating the Darkness of Ignorance — by 9th Karmapa Wangchug Dorje
One of the most famous expositions of the Mahamudra meditational system concerning the true nature of mind. Accompanying the root text is a commentary given orally by Beru Khyentze Rinpoche, based on the teachings of his guru - His Holiness the Sixteenth Karmapa.