OOPS!! Well that will teach me to read the posts properly I just assumed that it was about PUA well it is another acronym after all....lol

Actually dare I confess this but I am a licensed NLP trainer, have been apprenticed directly with the big guy himself (RB) both in the UK and the US and can train people with his endorsement.

NLP Books I would recommend as a starter are:

Users Manual for the Brain Vol 1 - Bodenhamer, Hall

NLP: The New Technology of Achievement - Andreas, Faulkner

Teach Yourself NLP - Bavister, Vickers

I personally do not like this book, it may be that I find O'Connor dry as a writer and trainer, however it is a well structured book and worth ignoring me and reading it anyway:

NLP Workbook - O'Connor

Once you got the basics then I would move onto Bandlers and Grinders work The Structure of Magic Vol 1 & 2 and also the Milton Erickson Books Vol 1 & 2 as well. Also Sleight of Mouth by Dilts and Mind Lines by bodenhamer and Hall