The Three Roots is a basic practice in Vajrayana Buddhism. You would begin this practice following the completion of Ngöndro, or preliminary practice. Khenpo Norgay gave this teaching in 2003 on his first visit to KPC, following his assignment to the United States.
Khenpo Tenzin Norgay, was born in the Tashigang District of Bhutan in 1965. After completing Jigme Sherubling High School in 1986, he joined Ngagyur Nyingma Institute, the prestigious Buddhist studies and research center, at Namdroling Monastery in Mysore. At the Institute he studied under Khenchen Pema Sherab, Khenpo Namdrol Tsering and Khenchen Tsewang Gyatso and other visiting professors, including Khenchen Jigme Phuntsok and Khenpo Pema Tsewang from Tibet. He completed the Shedra program at the Institute in 1995 and joined the Institute staff, teaching there for three years. He was formally enthroned as Khenpo by His Holiness Penor Rinpoche in 1998 and was assigned by His Holiness to teach at the Buddhist college at Palyul monastery in Tibet. He has received all the major empowerments of the Rinchen Terzod, Nam Cho, Nyingthik Yabshi and Nyingma Kama from His Holiness Penor Rinpoche as well as the Mipham Kabum from His Holiness Dilgo Khyentse Rinpoche. Because of his knowledge and experience, and fluent command of the English language, His Holiness Penor Rinpoche has assigned him to teach students in the United States in conjunction with the ongoing teaching programs offered by Khenchen Tsewang Gyatso Rinpoche.