You're going to get a bunch of different answers since you left the field wide open.
These are not easy starters, but are most accurate, IMO:
Subjective Reality This is Steve's link but you can Google for others
The Seth Material
including these books:
The Nature of Personal Reality
The Individual and the Nature of Mass Events
Also learn a little bit on chakras, so you'll get the lingo.
I'd skip the Law of Attraction, it's really popular around here but it's buggy.
On edit: Don't know if you were kidding or not, but steer clear of any practice that has you
transcending the physical body.