Imo, people looking for these "pick-up" books are usually pre-relationship people. Why? Because after getting through a relationship, all of a sudden everyone is getting in and out of relationships left, right, and center, whereas they had never before.
All these types of books or movies or whatever try to do is target a market that is unconfident/inexperienced. Just ask her out. Step 1. Not a bunch of steps leading up to step 1.