An understanding of the Theory of the Mind is helpful to understand how hypnosis helps solve everyday problems for everyday people.
Martha Wilks Harrison teaches the Theory of the Mind in this 4-part YouTube session.  This comes highly recommended to review prior to your first session.  

Theory of the Mind - Part 1
http://www.youtube.com/watch?v=f4XOFzJb_F0

Theory of the Mind - Part 2
http://www.youtube.com/watch?v=yH2gu9Fuw1Y

Theory of the Mind – Part 3
http://www.youtube.com/watch?v=4iT9qYlIsFw

Theory of the Mind – Part 4
http://www.youtube.com/watch?v=VXs6tPP14kY