Questions pertaining to my first game

I have been making a Binary Land clone for fun in my spare time but I'm not sure what versioning system I should use (I don't even know what the different versioning systems are, could someone enlighten me?) and what copyleft license I should use.

Could I have some advice here, /prog/?

>>1
What operating system do you use?

For versioning system, I highly recommend Subversion. It's extremely easy to use, and if you're running a Debian-based machine, it's a total joke to install; assuming this is a single-user project, you literally just apt-get the thing and you're done.

As far as the license goes, ask yourself whether it would bother you if someone took your code and made their own closed-source game out of it. If that would bother you, use GPL; if you encourage that, use BSD. It really depends on how novel your game is though; if it's just a clone of some old game, it makes no difference what license you use.