That's a tough one. You might try reading Robert Anton Wilson, and listening to some lectures from Terence McKenna.

The thing about the word "shaman" is that it can be a very general term. Using the word "healer" might be more helpful. Try asking around your circle of friends, maybe go to some hippie shops where they sell crystals and ask if they know anybody who knows about energy work... That might be a lead.

If you're on the rocket chat I can add you to our channel