If I remember right, svn used to be a bit more involved than eg git for just starting tracking of a local project. I think you used to need to set up a (local) server etc?

They seemed to have fixed that, so the barrier to entry is lower than it used to be.

Almost any version control is better than manual mucking around with files.

Git is probably the better investment, if you are new to version control systems; if even just because everyone else uses it these days.

But svn would work ok-ish, too. And you can always convert your history later, if necessary.