As promised, I picked up a Barnes & Noble NOOK e-book reader, the inexpensive NOOK Simple Touch, this past week so I could "Windows 8.1 Book" on the platform.
But what about NOOK?
If you have a NOOK, we offer the book in ePub format, and you can copy the document to your device much in the way you would with a Kindle or any other disk to disk transfer: Just connect the NOOK to your PC via USB and drag and drop the file to My Files\Documents on the NOOK.
The book appears in the library view on your device as you'd expect, and it even provides the temporary cover image I supplied in the thumbnail, which is nice. You can navigate through the book, including using hyperlinks such as in the Contents, as expected. You can change the fonts and so on.
For the most part, ePub seems to work well, and similarly to how MOBI versions of the book work on the Kindle. There's one obvious exception, though: Screenshots are not truncated to the page width for some reason, as they are on Kindle. So they bleed over the right edge of the screen.
If anyone has any ideas about this, please let me know. I'm using Calibre to make the MOBI and ePub versions of the book.
But I'm hoping this won't be an issue when we go to publish the 1.0 version of the book to Kindle and NOOK. In fact, this arguably can't be a problem, since we can't publish like that. So this is a weird side effect of ePub, or of Calibre, or we'll need to figure it out.