The Game is pretty much Neil Strauss's memoirs on his pickup days. It doesn't really give you info on pickup. However, it is a really good book and it is probably the most enjoyable book I ever read. It is very inspiring and motivating if you are just starting pickup. I'd recommend it.
Mystery Method is very informative and gives you the basic theory behind Indirect game. It isn't an easy read though. It reads almost like a college psychology book.
Bang by Roosh V is a very easy pickup book. You might want to check that book out too.