Chokyi Nyima Rinpoche has a large monastery in Boudha just outside Kathamandu next to Thrangu Rinpoche monastery . He also has centers outside of Nepal and his monastery is both of the Kagyu and the Nyingma lineage. 

This Song of Karmapa written by the Rangjung Dorje, Third Kamapa which is a  spiritual song summarizing the vast teachings of Mahamudra in a very concise way in a few dozen verses. Chokyi Nyingma then gives a very detailed explanation of what these verses mean. This book was translated by Erik Pema Kunzang.