Learning about Hypnosis

Greetings.

One of the most important themes at the moment for me is Life past Regressions. There are a lot of answers that can't be discovered without knowing what we were, what we did...

I know there are some techniques that can be used by a person to make the other traveling consciously to the past.

What i am trying to know is the name of some good books that teach us how to hypnotize others with the objective to do a regression to the past lives.