Taking the Path of Zen — by Robert Aitken
This work presents the practice, lifestyle, rationale, and ideology of Zen Buddhism with remarkable clarity.
Mindfulness With Breathing - A Manual for Serious Beginners by Buddhadasa Bhikkhu
The author provides practitioners with penetrating insights into the canonical text which many believe is the most direct transmission of Shakyamuni Buddha's breath meditation methods.
The Practice of Mahamudra — The Teachings of His Holiness the Drikung Kyabgon Chetsang Rinpoche
Explanation of the five stages of Mahamudra. Probably the clearest presentation of Mahamudra meditation practice available in English.