Q: I've heard it's possible to copy songs and photos from my computer to my iPad without having to use the USB cable or iCloud. How do you do it?
A: Apple began to include a feature called iTunes Wi-Fi Sync last year with its iOS 5 software. It allows you to transfer content between iTunes on the computer and your iPad over a wireless network that you can transfer with the USB cable.
Both the computer and the iPad need to be on the same Wi-Fi network, and you need to be using at least iTunes 10.5. Before you can use the feature, you need to turn it on within iTunes for each device, so you need to connect the iPad to the computer with the USB cable at least one more time.
When you have plugged the tablet into the computer, click the iPad's icon on the left side of the iTunes window and then click the Summary tab in the row that appears in the middle of the iTunes window.
On the Summary screen, scroll down to the Options area. Put a check in the box next to "Sync with this iPad over Wi-Fi" and click the Apply button (then the Sync button) in the bottom corner of the iTunes window to change the setting.
Once you have turned on the iTunes Wi-Fi Sync option, an icon of the iPad stays visible in the iTunes window, even if you do not have the iPad plugged into the computer with the cable.
If you are not set to synchronise new content between devices automatically, you can drag new songs or videos onto the iPad's icon to add them to the tablet, just as if it were physically connected, and the files will copy to the iPad over your Wi-Fi network.
The iPad should sync itself to the computer at least once a day as long as you have iTunes open, the iPad plugged into its power charger and both devices on the same network. Apple has more on iTunes Wi-Fi Sync at support.apple.com/kb/HT1386 and troubleshooting tips at support.apple.com/kb/TS4062.