If the jostling sidewalks of Broadway have you on edge, dodge one block east to this exceptionally good and uncrowded used bookstore. Rather than squeezing into narrow aisles bulging with books, you'll have room to maneuver; if you can't wait to crack open your find, grab a table at the café in back. The store's roster of readings and events is well worth looking up. Subway: R, W to Prince St.