Unity Version Control for non-Pro?

Hello. I’ve been trying to find information on version control in Unity without much luck.

I’m about to make a large change to my game and I want to have a back up somewhere that I can go back to when things go horribly wrong.

So what do non-Pro members do for this? Copy the whole project and keep a folder system for all the versions of your project? Maybe copy just the scripts and scenes?

With Unity 5, the Personal and Pro editions are basically the same.