Frogs into princes is the mainstay of NLPers from what I gather, it certanly was a interesting read for me.

Alot of what got me Into NLP was downloading some of Bandlers seminars rarther than reading books by people who followed suit. He goes into a lot of nested loops and sublte hypnotism on the adudience that tends to be lost in the books.

Other than that try the structure of magic another good read