Read the Center of the Cyclone. It was written by a doctor and was the basis for the movie with Michael Hurt, I forget the name, the one where he turns into an ape. Somebody help me here.
Afraid not There are monks who develop certain abilities but I don’t believe astral projection is one of them besides Buddhist monks are prohibited from displaying any super normal powers under the code of discipline.
Any who claim they can teach you are frauds Keep hold of your cash