Hi folks, I found this video, "De-Mystifying The Occult, Part II Satanism and the Dark Occult" https://www.youtube.com/watch?v=odw6q4fcORE it's fairly long (3 Hr 45 Mn), Mark was an insider to The Church of Satan. It's very interesting and comprehensive. I believe Part I, covers the history of satanism back to Babylon. Watch it in sections, he is a very good speaker on the subject.