United Aspects of Satan: The Black Book, is an updated, professional version of the free PDF on the United Aspects of Satan website. This continues the philosophy of The Satanic Narratives. While the material is all available on the websites (uaofsatan.org and atheisticsatanism.com), this is the only way to get this material in print or on your e-reader. The exception is the one part that was in The Satanic Narratives.
These essays build on the foundation of The Satanic Narratives, and show how the United Aspects of Satan developed from that. For those unfamiliar, the UAoS is an atheistic, Satanic religion, which incorporates skepticism and a Humanist style of secular ethics. It can best be summed up with the Baphomet Prinicple, but more details are available on the websites.
The Baphomet Principle: Self-motivation balanced with compassion and reason, in all things.