shamanisim: archaic techniques of ecstasy -- mircea eliade
this is a must have book if you've ever been interested in shamanism. i haven't read it all the way through yet but it is one of the most interesting non fiction reads i've had yet. shaman myths are some of the most fantastical/psychedelic stories, and i think they provide a lot of insight if you are the type to embark on psychedelic journeys yourself. it was written by religious historian mircea eliade and first published in 1951. its written like a history book and its not new agey if that sort of thing turns you off and it's also not a book of prayers and spells. it follows different shamans from north, central, and south asia, to north and south america. some chapter titles are: "initiatory sickness and dreams", "obtaining shamanic powers", "parallel myths, symbols, and rites."
to be honest, i feel like the creators of xavier: renegade angel studied this book and took a lot of shaman myth imagery out of it and it makes the show that much mind twisting.