A print book should have "Facing Pages" checked, and an e-book should not. Check the "Master Text Frame" option if you plan to use page numbers, footers or headers on each page.

To export InDesign document (INDD) in Word, you can convert InDesign file to PDF and then to Word, or export InDesign file as Rich text Format.

End-to-end, I was able to go from InDesign document to Kindle document live and running on my Kindle in six minutes.