Here’s where it gets interesting:Three options: 1.) Wi-Fi, 2.) Free 3G, or3.) USB. Which is right for you?
How they each work: Wi-Fi (wireless internet): If you don’t know that you have this at home, you probably don’t. If you do, just connect your Kindle via Wi-Fi and it will automatically sync. Free 3G (cell signal): To have this, you had to have purchased the Kindle with “3G” in the title. Same deal—connect, and it will automatically sync. USB (connect to computer): If wi-fi and 3g are not options, click “Download Now.” Then connect your USB and copy the files from your PC to your Kindle.