Use the included USB cable to connect iPad to your computer. Connecting iPad to your computer lets you sync information, music, and other content with iTunes. You can also sync with iTunes wirelessly (see Getting Started section -> Sync with iTunes).
To use iPad with your computer, you need:
Pack 3 or later
Unless iPad is actively syncing with your computer, you can disconnect it at any time. Look at the top of the iTunes screen on your computer or on iPad to see if syncing is in progress. If you disconnect iPad while it's syncing, some data may not get synced until the next time you connect iPad to your computer.