The Karmapa - "he who carries out the activity of all the buddhas" - was the first recognized incarnate lama in Tibetan history.
The teachings of the third Karmapa, Rangjung Dorje (1284-1339), have been transmitted through an unbroken lineage until the present day.
Chokyi Nyima Rinpoche - meditation master and scholar - is the abbot of Ka-Nying Shedrub Ling Monastery, a major center for Buddhism in Nepal. His other books include The Union of Mahamudra and Dzogchen and The Bardo Guidebook.
Chokyi Nyima Rinpoche's commentary on the Song Of Karmapa presents direct instructions on utilizing the deepest spiritual knowledge.