wildbill2u :
I know I need a backup for my files and OS in case of a crash
1. Kudos to you for being proactive on this.
2. Assuming you have an external drive handy, this is
easy.
I use Macrium Reflect to create Images, Full/Incremental/Differential, to another drive or system.
Automated on a schedule you set, easily retrievable.
Read here for my and others methods:
http://www.tomshardware.com/forum/id-3383768/backup-situation-home.html