This is a wonderful thread to see here!... My own occult studies are a significant resource in integration and in navigating psychedelic experience, and vice versa. It's interesting to see that not so many people seem inclined to parallel or integrate these facets of the mystery.
"Magick", itself, is such a very broad term... In my expereince, it simply refers to the art and science of altering reality in according to one's own will... And there are many avenues of exploring such a far-reaching topic.
*May I ask of those responding to this thread: What areas of magick/occult study appeal most to you, and especially, which can you relate most to your exploration of psychedelics and entheogens?*
Personally, I grew up in mostly Gardnarian Wiccan tradition, but was not raised according to those beliefs (rather, I was encouraged to seek and explore for myself, for which I am eternally grateful). Currently, I find myself most drawn to the Left-Hand path and to Chaos Magick specifically, finding great guidance and insight in the works of Peter J. Carroll, Phil Hine, Austin Osman Spare and others. Contemporary Hermeticism, Tantra and modern Satanism also grab my interest as well.
-In nearly all these paths, there is opportunity to explore and apply the benefits of "chemignosis" (The use of entheogens in spiritual exploration and magickal work) to great effect. There are, as well, many books in print on the subject that expand beyond simply botany and chemistry into a holistic and all-inclusive approach to the exploration of psychedelics.