In a recent Study Hall, someone asked how one can deploy the ePub output generated by ePublisher to an iPad. This path has been a little unclear to me, and so I promised to research and blog what I found.
In brief, here is the excerpt from Apple's FAQ regarding this use case:
Can I download books from other websites? Yes, you can download freely available ePub files on your Mac or PC. Using iTunes 9.2 or later, add them to your iTunes library choosing File > Add to Library, or drag the ePub file to the Books library on your computer. To read these books, simply sync them to your device.