Backing up Libraries

Excuse the basic question here but Im Switching to 10.2, anybody have any easy step by step guidelines or links to guidelines on the best way to do this using an external hd?

What are you switching from? First time users or upgrading from older version of FCPX?

From 10.1.
Thanks.

The biggest change from 10.1 to 10.2 is not in the application at all but in the upgrade to the OS. The application has a lot of new features and higher system requirements but as far as FCP is concerned the upgrade is seamless.

Install the new app, open the Libraries, they'll want to update, not a big deal.

If you're worried, copy your FCPX 10.1 app to a safe place, and your Libraries, too. Then just update as usual, leaving the backups in place just in case something goes wrong.
support.apple.com/en-us/HT202633

I'm using an old macbook pro at the moment (new one is being fixed) 2010 issue, 16gb ram, 256 MB vram, you think It will handle 10.2?

Probably for basic editing without too many effects. Stay away from the 3D titles.