When Penelope O'Shaunessy, "an incoming freshman of average height and lank hair" steps into Harvard Yard for the first time she has lots of advice from her mother: Don't be too enthusiastic, don't talk to people who seem to be getting annoyed, and for heaven's sake, stop playing Tetris on your phone at parties. Penelope needs this advice. She is the kind of girl who passes through much of her life with coffee spilled on her white shirt, who can't...