I've Read NLP for dummies, the brain: a users guide (master practitioner textbook), structure of magic 1 and 2 (1st 2 books by bandler and grinder), frogs into princes (by bandler), hypnosis: a comprehensive guide by tad james, hypnotherapey by Dave Elman. Been to loads of NLP practice sessions run by a local trainer, learn a bit of hypnosis as well.

But it's like anything you have to filter out the horse shit and look to what was the original inspirations, like Milton Erickson, virginia satir, fritz and Laura Perls, Carl Jung and Norman Chompsky.