Greetings!
Shamanism is all about Life. In all its forms. Mediocracy is very correct...you won't learn shamanism from books but by life experience. The majority of practising shamans have usually undergone a near death experience sometime during their lives. This is not, however, a hard rule! The tingling could be any number of things. As a shaman you will experience many things that others don't. You are unique in your interpretations of these phenomena. I wish you well on your path. (IMG:
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BTW,"the Way of the Shaman" by Michael Harner isn't bad, nor are the books by Caitlin and John Matthews....