How to convert a book into an app?

I have written and illustrated a small collection of children's books. I want to convert them into an app to be compatible with iPod and iPhone applications. I need the page flip function and to be able to record my own narration of the books so the children can listen.
Can any of the brilliant computer people out there offer any programs (preferably not expensive) or ideas so I can convert these little books myself?

Possibly try finding some resources online that lead to inexpensive people who can help ya! Best of luck Stella

You could try doing that through blurb