This is a newly updated sourcebook, a set of two volumes, produced from a series of talks given by Acharya Lama Tenpa Gyaltsen at Nītārtha Institute, Gampo Abbey, Cape Breton Island, Nova Scotia, Canada, in August and September 1998, and by a series of talks given by Karl Brunnhölzl at Nītārtha Institute, Nalanda West, Seattle, Washington, United States, September, October, and November 2018.