The torch of certainty is an essential text for any serious Buddhist practitioner of the Kagyu lineage. The text, written by Jamgon Kongtrul and translated by Judith Hanson, describes the four ordinary foundation practices and the four special foundation practices. These are commonly known as the ngondro practice.
The text covers specifics on each practice and should be used alongside the Ngondro text, with instruction from your lama.
The introduction includes a section on the Kagyu lineage known as the golden rosary.
The must have manual for anyone setting out to do the Ngondro practices. Clear and concise, with a very nice question/answer section.