If every story is born of a question--How did we get here? How do you make your arm do that?--the stories in Geoff Wyss's How search for answers to the mysteries of an astonishing range of characters. The narrator of "How I Come to Be Here at the GasFast" explains why he hasn't left a truck stop in the two days since he scratched a winning lottery ticket. In "How to Be a Winner," a sports consultant browbeats a high school football team with his theory of history and a justification of his failed coaching career. Lost in the mazes they've made of themselves, Wyss's...