Just in case you didn't know, you don't have to buy books through Amazon (actually that's the worst option). You can buy the books in epub format from the publishers website or other stores usually (and if all else fails, pirate it in epub format). Epub is DRM free, which means you actually own the book, and, although I wouldn't have recommended buying an Amazon Kindle, now you have it, according to another commenter, you can email the epub to yourself and read it on the kindle.