Get to know your history
One of the best feature in Windows 8 is File History. It’s an automatic update service that can back up information to a second drive and also lets you selectively restore data. First, however, you have to open and access it. To do this, search for File history in the settings search. Open it, and then click the Turn On button. File History handles the rest.
If the drive you want to back up to is not selected you can change drives by clicking the “Select a drive” link on the left. You also can restore files by clicking the “Restore personal files” link.