Since you are interested in psych I might recommend you check out Carl Jung. He wasn't just one of the fathers of psychology, he was also very big into the occult. Reading him (or other Jungians) could get you an entrance to occult themes while relating to your field of interest. Marie louise von franz might actually be a better place to start. She wrote about fairy tales and alchemy from a psychological perspective. I'm pretty sure I linked one of her books in the OP under 'alchemy'. if youre not already familiar with some jungian basics, you could read Man and his Symbols to get started.
Personally, the corpus hermeticum was my intro. I think it is a fantastic place to begin. It is also in the OP under 'hermeticism'.
Since you are not really interested in practice, you could probably do without Crowley, Dion Fortune, and other more modern occultists that people usually tell you to begin with.
What type of folklore/occultism interests you?