my first kindle the screen inside cracked. amazon said that you cant put pressure on the screen. they replaced it with no problems. i just had to ship the damaged one back. i was able to transfer my books to the new kindle without a problem. you can archive books to amazon so they are not on your kindle. you can retrieve them easily by just going to the archived application on the kindle and redownloading the book. amazon will store your books for you so your kindle doesnt get full. i would definitely advise getting the kindle with 3g for alittle more money.