Be sure to let your Kindle have a close association with your computer. With just a few computer skills you can find books elsewhere on the Internet, free books even. There are certainly plenty out there, from many different sources. Once you find them, you can download them and store them in a special ebook folder on your computer for use on your Kindle. It is a terrific partnership. In the case of books, free does not mean inferior (think Classics).
With a computer, you can also visit your Amazon account, specifically the Manage Your Kindle area, and send your Kindle books you have purchased to other devices on your account, even delete one for good if you truly no longer want it. If you remove a book you have purchased from Amazon from your Kindle, it is still going to be stored in the Archives (your library) on Amazon.com. You can dig it up and have it sent back to your Kindle any time you want. In order to really remove it completely (you would actually have to purchase it again if you wanted it back), you need to delete it yourself from the Archives on Amazon in the Manage Your Kindle part of your account.
