Man I love my mom, this thing is the greatest gift in the world. I have been flying through books with nothing else to do, and I have a 9 hour hospital day coming up that will be filled with painful sitting around. I know the Kindle will add some serious comfort level.
One thing Amazon does with these devices that blows my mind in a negative way is putting such limitations on collection management. I use Calibre to manage my books, but Amazon doesn't allow us as consumers to manage collections and sync them, you can only manage them on the device which is a PITA unless you have a touch or keyboard. From Calibre:
Neither the Kindle nor the Nook provide any way to manipulate collections over a USB connection. If you really care about using collections, I would urge you to sell your Kindle/Nook and get a SONY. Only SONY seems to understand that life is too short to be entering collections one by one on an e-ink screen
Note that in the case of the Kindle, there is a way to manipulate collections via USB, but it requires that the Kindle be rebooted every time it is disconnected from the computer, for the changes to the collections to be recognized. As such, it is unlikely that any calibre developers will ever feel motivated enough to support it. There is however, a calibre plugin that allows you to create collections on your Kindle from the calibre metadata. It is available from here.
Note Amazon have removed the ability to manipulate collections completely in their newer models, like the Kindle Touch and Kindle Fire, making even the above plugin useless. If you really want the ability to manage collections on your Kindle via a USB connection, we encourage you to complain to Amazon about it, or get a reader where this is supported, like the SONY Readers.