So far, my experience with the Kindle Fire has been positive, but one downside is that it does not read the popular (DRM-free) epub format. If you have amassed a collection of epub books over the years (whether you've downloaded them for free in the Google Library, or elsewhere) and want to take them on the go with your new Kindle Fire, fret not - there is a simple way to convert and upload these books to your device.
Called Calibre, this free software download helps you manage your ebook library, collect information on your books (meta data, titles, descriptions, ratings, and more), and most importantly, convert your books to a Kindle Fire-readable format. Getting started is simple - download Calibre, select your device, upload your books to the program, and drag and drop them into your ereader for proper conversion. Calibre supports a number of devices (from Kindles, Nooks, Sony Readers, smartphones, and others) and can get your ebook library organized fast. I don't want to say it's the iTunes of ebooks, but it kind of is. The software is free, so there's no reason not to try it.