I have a 5" Pocket Pro EZReader (sometimes called PEZ), and I love it. I buy books from
Smashwords and the Multiformat selections at
Fictionwise, and from Baen, both their
free library and the
WebScription ebook store (don't let the name fool you; you don't have to subscribe to anything--although you can, and get books earlier than they're otherwise available).
There's also plenty of free ebooks--from the
free library here at Mobileread, you can use any of the epub or mobi/prc ebooks, and some of the PDFs. (You can technically use any of the PDFs, but they may not all display well on the small screen.)
Project Gutenberg is a great place for public domain ebooks (although the ones that are here, tend to be better--they've been carefully formatted with portable readers in mind), and a lot of authors release free ebooks at
Feedbooks.
I add books by drag-and-drop, but the majority of Astak EZReader users probably use
Calibre to manage and transfer their ebooks. (It's a great program; it's just that I bounce between several computers and haven't figured out how to coordinate it.) With Calibre, you can convert any non-DRM'd ebook to a format you can read; I prefer the epub support to the mobi/prc formatting.
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