When the app is launched an animations shows stage curtains opening, the user is then presented with the cover of your book (page1.jpg), they are then presented with the options "Read to me" or "I'll read" - choosing whether or not to enable narration (page1_narrate.mp3, page2_narrate.mp3, etc), and are taken into the content of your book (page2.jpg, page3.jpg, etc). The in-app menu (lower left corner) allows the user to jump to any page, go to your website, or doodle on activity pages you include (activity1.jpg, activity2.jpg, etc).
It's so easy to create a book with this project - download the files for the sample book here to see how your jpegs and mp3s are transformed into a functional app.