I really don't see the point of giving space to these degenerate "occultists" when the real occult belongs to the real Gods. Honestly, I don't know why you give space to these people with absurd doctrines just because they wrote some books and this makes them feel like "authoritative sources on the subject" as if writing things automatically makes you an expert on the things you write... studying from this guy you mentioned is no different than "okay, I have the academic texts of university astrophysicists in my bookshelf (like it was Joy of Satanas), better to put them next to the pamphlets of flat-earthers...).
It is a generic "you" of course. Thanks for asking and feel free to ask everything because we are here to help you. But yes, many reasons in the way of I told you in my reply.