Secret Buddhism reveals the essentials of Vajrayana, mantras, empowerments, the six yogas of Naropa, Chod, Pure Land, and the six Bardos.
A history of the Kagyupa and Shangpa lineages and some explanation of the principles of Tibetan medicine complete this survey of Tibetan Buddhism.

Secret Buddhism, Kalu Rinpoche, Clear Point Press, Paperback, 220 pp., $15.95

The late Kalu Rinpoche was born in 1905 in Eastern Tibet. At fifteen, he gave his first public teaching and soon afterward entered the traditional three-year, three-month retreat. From the age of eighteen, Rinpoche studied with several eminent teachers in Tibet and then began a period of mountain retreat.
Rinpooche spent many years teaching and directing retreats in Tibet. By 1955, he had revitalized the Shangpa Kagyu lineage and was a senior lama at the Karma Kagyu lineage when the sixteenth Gyalwa Karmapa sent him to India and Bhutan to prepare for the anticipated exodus of refugees from Chinese occupied Tibet.
In 1971, H.E. Kalu Rinpoche was sent on a teacing journey to the West by His Holiness Karmapa. During his many subsequent visits, he founded numerous dharma and retreat cetners for serious study in the Kagyu tradition in France, Sweden, Canada and the United States before his passing in 1989.