Of Mice and Men - John Steinbeck. Come to think of it.anything by Steinbeck. One can always learn more about writing by rereading Steinbeck. Even after teaching this one about 50 times, I still love it.
First Hemingway Book I ever read. Not only can you get your literary passport stamped twice with Hemingway's romp through Paris and Pamplona, but you can enjoy an immersive mood piece about the highs and lows of drunken, rambling youth.