Amazon has top books lists for most major characters as rated by buyers and they're usually pretty good. If you're looking to get into the Batman Grant Morrisson run which ends going into New 52, (little overlap for Batman Inc) I'd recommend tradereadingorder.com. There's a really, really long arc leading up to the death of Bruce Wayne, **** Grayson's run as Batman and the return of Bruce; throw in Damian Wayne and there is a lot of great story/art during all of these runs. It's probably 30-40 books or so, (I can send you a list if you'd like), and I highly recommend it.