How does a place get haunted? What is haunting?

Shamanism Classes at Shamanscave

First of all, ghosts are real, but they aren't real in the sense held in the popular imagination.

Let's take a house that is, say, one hundred years old.  Families, relatives, friends, etc., occupy the house over time.  Something happens that creates a tear in the energy; most often, someone croaks it in a bad way.

How is ecstatic trance different from self-hypnosis or visualization?

There are some practitioners going around talking about shamanic trance in terms that are right out of a hypnosis textbook. The trance we're talking about can actually start that way, but self-hypnosis tends to spiral in on itself where the ecstatic trance moves outward taking you with it.  It was called ecstatic because it was first arrived at through dance, drumming, and general hoopla

In the common vernacular, there are healers and seers.

What are the primary paths of shamanism?

As in dreamers versus stalkers, or oracles and seers and such?  

I see it this way: shamans have to become accomplished stalkers, dreamers, seers, and healers, as well as a few other things, but according to each individual's predilections, they will end up specializing in one area.