You may run into some issues today with Apple's servers getting slammed by millions of iOS device upgraders. Go to Settings > General > Software Update and click the Download and Install button for iOS 7. If you are on a Wi-Fi network, you can upgrade to iOS 7 without needing to bother with iTunes. In addition, there are a few other things to do before you install iOS 7, including upgrading to the most recent version of iTunes (11.1).
Before you update, however, it would be a good idea to back up your iOS device. You can simply update your iOS device over the air via the device's Settings, or you can connect it to your computer and use iTunes. There are two methods for downloading and installing iOS 7. If your iPhone, iPad, or iPod Touch is pictured above, then you can upgrade it to iOS 7 today and experience the radically new design and new features while you eagerly anticipate the expiration of your current contract.
