I'd recommend reading Doug Glanvilles book: The Game from Where I Stand: From Batting Practice to the Clubhouse to the Best Breakfast on the Road, an Inside View of a Ballplayer's Life. Really a must-read for any hardcore baseball fan. Enduring, entertaining and informative
I bought Lenny Dykstras book during the summer and thoroughly enjoyed it, I think you might like that too. Though it is an autobiography, and not strictly about baseball. Still, the baseball anecdotes are super entertaining.