I need some help - Format Computer/Game Save Places

You can use usbs, external hard drives and maybe clouds to store game files. (folders)

If you have the games on Steam and they use Steam cloud and you have it turned on then you probably don't need to worry about backing up progress.

Aside from that, you can give this a try: GameSave Manager

As far as the Borderlands 2 thing goes, if you right-click on an installed game in your Steam library there should be an option to backup the files.

Just savefiles are in too much places, could be in MyGames, Documents or %LOCALAPPDATA%.
You have to google for each game, where the savefile is.
I think there was a wiki or website for this, if not, someone pls make one. ;)
I just backup games and save files manually on a external HDD. You can use any Backup tool, too.

Maybe this will help you: http://savelocations.wikia.com/wiki/List_of_Games