I'm currently reading The Game - Penetrating the Secret Society of Pickup Artists by Neil Strauss. It's like literary crack for INFPs: I know I shouldn't be reading it. I know it's bad for me. I know I'll regret it further down the line. But it's just so damn interesting. It's giving me a lot more clarity on what makes women attracted to men, and its heavy emphasis on teaching through anecdotes makes it both easy to read and obviously practical.
An INFP playah - is it even possible? (Mr Strauss's answer to that would be: absolutely!)