Dell Backup and Recovery offers Basic and Premium data protection service. Basic currently comes pre-loaded on all Dell Windows 7 and 8 systems. If you don't have this utility, download it from Dell.com (link in Resources).
Go to the Windows 8 Start screen and swipe up to see a list of all your Apps. Dell Backup and Recovery is in the separate list of Dell apps. Select the "Backup" tile, then the "Data Backup" pane, and select "Backup Now" to create backup files of your personal data and documents on your hard drive. Upgrade to Premium to use the Cloud pane to back up your data online.