Here is a list of books for using the iPad in education. They are all FREE.
The iPad Ideas Book
Engaging iPad Lesson Ideas
iPad for Writing
Sharing Learning with Real Audiences
This is not downloaded on the regular iTunes, but on iBooks. You will have to download iBooks from iTunes if you do not have it installed.
These are items you will want to check out because I just heard about them. Hopefully it is something some of you may be able to utilize.