Some may not understand the good that backup does until they lost there important information that they can never see elsewhere. It has happened to me before and thought me hard lesson. I can never use a device without backing up all my folders.
I would have advice a computer but I'm not good in that to advice on a particular computer to use. All I know is all Apple PC are cool cos that's what I use. It's now depend on what spec you are looking at.
Very important and vital information. Thanks @nepd