Or read up on Crowley, who was also inspired by lots of this kind of stuff.
It's all super interesting, because this kind of thing has been bubbling under the mainstream for centuries, often vestiges of pre-christian pagan religion basically, even if a lot of it is quite modern. Movies and fictional works which do their research and incorporate elements of this are also quite interesting:
Examples: Antichrist (2009), The Witch(2015) and Annihilation(2018).
Obviously, be careful with this kind of thing. Take it too seriously, spend hours reading up on it, and you start thinking "hmm, maybe there's something to this." at which point you're literally engaging in delusional thinking. It's a rabbit hole basically. And obviously you know it's all nonsense, but humans are inherently superstitious animals.