This is actually a 3 volume list of books: a text, a workbook plus a Instructor's guide, that I examine from continuously, and have for the past 31 years. It is one of the most vital spiritual messages of our time. The Course combines 21st Century psychology with non-dualistic metaphysics. https://www.youtube.com/channel/UCXpL4OXSmktqlP6_S5p5jIQ