As AnemicOak says, most Kindle books have DRM and if they are DRM-free than its web page will say "Simultaneous Device Usage: Unlimited".
You need a "device" to buy a Kindle ebook, and usually Kindle for PC is your best choice if you don't have a Kindle 1/2/DX. There used to be two ways to strip the DRM from Kindle for PC AZW files (which have the extension .prc). However, the easiest of the two (unswindle.pyw) no longer works with Amazon's latest version of K4PC. The command-line version, skindle.exe, still does work though. Apprentice Alf's Blog is the best single site for DRM discussions, it includes a post on Kindle for Windows.
A DRM-free AZW file is just a MOBI file, and Calibre can convert it to ePub.
|