BradyGames’ Batman: Arkham City Signature Series Strategy Guide includes the following:

Join the Dark Night as he soars into Arkham City, the new home for all of Gotham City's thugs. The sequel to Arkham Asylum brinds together an all-star cast of heroes and villains.
-The walkthrough chapter will cover how to subdue the villains attempting to stop Batman. It will reveal the ultimate path through each level and the best tactics to employ.
-Learn which gadgets will work best and how to deploy them for maximum effect.
-Area maps illustrate all the available item locations.
-Character and villain bios.
-Rundown of all the game's new moves.