Okay, it's not the most contemporary, well-lighted place in the world. There is a sort of Aunt-Millie-with-all-the-cats sort of feel to it. But shopping for used books shouldn't really be a goal-oriented activity, anyway. It should be an adventure, a hunt. And nowhere is the hunting more interesting than at the aptly named Bookstore on West 25th. There are all the usual suspects, of course: plenty of musty old novels and fat history books about dead white guys you remember from 10th grade, as well as a surprisingly well-stocked children's section. But this is more a place to be soaked up than stalked through, and any store where you are in serious danger of actually tripping over piles of books deserves some serious exploration.