Backing Up Your Files
There are several ways to backup your files. If you already have something in place that is working for you then you can stick with that. We do caution you that backing up to an external hard drive is risky as these drive often fail.
If you aren't currently not backing up your files, the Tech Department has instructions on backing up your files to your OneDrive. Since One Drive is in the cloud and maintained by Microsoft, this will be a more reliable solution. (Instructions: Backing Up Files to OneDrive)