I love my Kindle! (I don't have a Kindle Fire, just one of the simple models.) So handy for reading before bed. I tried a free sample of a quilting book on it, though, and that didn't work for me at all. I think for reference books such as quilting books, I'm going to stick with hardcover so I can flip to the section I want easily.
By the way, the author I work for has a book available for free right now for the Kindle. As in, zero dollars.
If you love romance novels, search for Only Us by Susan Mallery.