First of all I recommend The Game by Neil Strauss – primarily for motivation and entertainment. Most of the guys discover the pick-up community through this book. The book is extremely inspiring and full of outstanding tips and routines (priceless: The Cube) you can use tonight when you go out sarging (however it’s hard to keep track of them all – the book has more than 440 pages!)
The Way of the Superior Man by David Deida has nothing to do with pick-up, but in my opinion it’s simply a must for every guy trying to get better with women (actually for every guy in general). It will help you to understand women better but also to find out your purpose in life (!) You will see I have not overpromised.