I have created an interactive Travel Guide, as a prototype, in Pages and exported to pdf.
I am viewing that in iBooks on my iPod Touch till I work through the issues and resolve my best workflow and end result.
I have got well beyond my initial problems with the screen resolution, but will need to work out a more flexible solution. I am very satisfied with my current effort, which impresses the few people I have tested it on, but need to extend the interaction, form filling, multi-media and cross referencing.
Love to discuss this with you offline, as I'd certainly like to bounce things off you.