The Smithsonian has been looking at using iBooks Author to create interactive digital books for the iPad. Here are some resources and examples that have been recommended to us:
Start by watching this brief video: iBooks Author overview
There is also a demo video online within a longer webcast — see minute 10:36 through 16:37 for the basic iBA demo:
This support site is also a helpful resource to bookmark: iBooks Author support
Finally, you can check out Keynote and iAd Producer to build your own interactive widgets as well.
This 3rd party Keynote demo is a good overview of the power of Keynote (in Spanish).
Take a look at the following books for some examples of innovative uses of iBooks Author:
- Yellow Cab of the Universe — nice use of Panoramic image
- Oblivious Fill: The Time Machine — Chapter 3 Activities include use of many interactive widgets and some HTML 5 custom widgets
The Getty is also creating some nice art books using iBooks Author. Check out: