Reddit mentions of The Book of Black Magic

I think the reply you got from the other poster is quite good, then. I know very little about high quality sources on this sort of thing.

Maybe not what you're looking for, but have you seen the first season of the HBO show True Detective? It's fantastic, and on this subject.

As far as books go, I know Arthur Edward Waite was an early authority on all things esoteric, and he does appear to have [a highly rated book on black magic.] (https://www.amazon.com/Black-Magic-Arthur-Edward-Waite/dp/0877282072/ref=sr_1_3?ie=UTF8&qid=1511225241&sr=8-3&keywords=black+magic+book) Apparently [this one] (https://www.amazon.com/Black-Arts-Witchcraft-Demonology-Throughout/dp/0399500359/ref=sr_1_4?ie=UTF8&qid=1511225315&sr=8-4&keywords=black+magic+book) is also quite good (again, just based on my brief Amazon search), and may be up your alley.

EDIT: Oh, and re: general critiques of religion, stay far away from New Atheists like Richard Dawkins or Sam Harris - this stuff if tripe, and there is better atheist literature out there. Check out Bertrand Russell, or better yet, Ludwig Feuerbach, Friedrich Nietzsche, Karl Marx, Sigmund Freud. I'd be happy to provide more specific references for these thinkers as well. I'm sure there are less highbrow atheist writers who are also good, I just don't know about them, and a lot of them today fall into the "New Atheist" category.