Read some graphic novels from the library...
Batman: Arkham City - Paul Dini's prequel comics to the game.
Justice League: Cry for Justice - Green Lantern, Green Arrow and Ray Palmer decide they need to start roughing some jerks up in the wake of Final Crisis. Form their own version of the Justice League.
Star Trek: Volume 1 - Re-imagining old TOS episodes through the new Abrahmsverse.
Axe Cop: Volume 1 - One day a cop finds the perfect firemans axe...
A History of Violence - The movie is probably a better version of the same premise.
Nemesis - What if Batman was an evil jerk?
Batman: Dead to Rights - Early days fun with the Joker, I realized read the first half of this when it was published in Batman: Confidential but whatevs.
Red Hood: The Lost Days - What Jason Todd was up to after he came back from the dead.
Batman: The Black Casebook - Grant Morrison shares a whole bunch of the old Batman stories he referenced in Batman R.I.P. Including the story that features this panel:
Then, speaking of Grant Morrison, I also finally went ahead and read Batman:Reborn and the follow ups after I bailed from reading it piecemeal back in 2010. The novel order is:
Batman and Robin: Batman Reborn
Batman and Robin: Batman vs. Robin
The Return of Bruce Wayne
Batman and Robin: Batman and Robin Must Die!
The deluxe editions are freakin pretty in terms of paper and print quality. And it does a much better "ending" to Morrison's arc with Hurt and The Black Glove and Bruce Wayne than R.I.P. (and the five pages of Final Crisis) did. In fact, I see his run completely differently now, in a much more positive light, especially going back and re-reading R.I.P. and "thumbing" through parts of his run up to that. (And coming back to it after having read Animal Man and Doom Patrol in the meantime.) I still don't know if he was the best writer to hand the last days of "Old" Batman to though. Especially doing Final Crisis at the same time and then with Flashpoint happening so shortly after.
At least R.I.P. makes more sense now though.
And then there's the little follow ups, not from Morrison:
Bruce Wayne: The Road Home
Batman: The Dark Knight - Golden Dawn