iCloud can be a great tool to back up your iOS device. Here's how you can enable it on your iPhone, iPad or iPod.
1. Go to Settings.
2. Go to iCloud.
3. Go to Storage and Backup.
4. Set the iCloud Backup toggle to the On position.
Your iOS device will be automatically backed up onto iCloud whenever it is plugged in and you are connected via Wi-Fi.
Additional resources for iCloud
Read more: Macworld