Arrive at a comprehensive knowledge of the metaphysics of the Course in Miracles through a combination of audio/online video assets and Q&A dialogues with David Hoffmeister. Robert T. Carroll wrote which the teachings are usually not initial but are culled from "a variety of sources, east, and west". He provides https://www.youtube.com/channel/UCTleG6-484F7WHZD0hAjRRw