Publishing a kindle book - On my conversations with other indie authors and their posts on various message boards and blogs, other authors also see huge sales on days when their books are discounted, and even more massive downloads on days when those books are free. Average, i make a few hundred dollars each month from my affiliate account, because every time i link to my books from my website i use an amazon associates url that's got a tracking id attached. You can upload your book on amazon using other formats as explained on the amazon site, including epub, which is the most popular one (that's what apple uses), and others such as html, doc, and rtf. Every book launch should be unique, but here are a few things that work every time:Send an email to your list of friends, family, and/or blog subscribers, announcing the release of your book.
http://learn.robcubbon.com/self-publish-amazon-kindle-bestseller/ My comprehensive step-by-step course on self-publishing.