Do you need your solution to back up the data, or be able to restore the entire OS as well?
If you need a simple solution to backup the files, please follow the instructions of the excellent post by hamluis
If you need to image your disk (i.e., the entire disk, including bootable os), you can use something like DriveImage XML
, which is free. If you need additional features, such as incremental backup, differential backup, scheduling, and the ability to mount your backups as a drive letter, you might want to look at Acronis True Image
I use true image, but my needs may be different than yours.
For most uses, I'd go with DriveImage XML.
Have a nice day,