all that does help with dreaming and the skills you can acheive, but it sounds to me like your talking about seperate reality's and the layers of different world like an onion(as Castana talks about) it all helps with dreams, meditation, yoga, and inner self experience to be with inside yourself and let go to a degree.
look up some books on Carlos Castansa, and even on this site there is heaps on him everywhere.

good luck