The club is thumping, and everybody’s having a good time: You spy a woman across a sea of beautiful people and want to meet her. Do you: a) look in her direction until she smiles at you; b) send over a friend to see if she likes you, or c) saunter over to her and scream, “Wazzup?” You’re probably going home alone if you answered (b) or (c), but both are better than what a lot of people do: stare. “Many people walk into clubs with a defensive mind-set,” says Rodney Battles, author of Night Games! A Guide to Understanding and Enjoying the Nightclub and Bar Scene (Brown, $19.95), which hits stores later this month.