My first idea regarding this repo was to be for projects shared by community members, and not "personnal learning projects".
Not that I'm against the idea, but if everyone starts doing that, it might end up in a big mess of small abandonned projects.
That's only my opinion though, and this is the community git, so I don't have the last word on it.

If you want to get familiar with git, there is the motd.git repo which doesn't require anything more than common sense, and the ability to fit an ascii message in a 80 char wide file ;) Plus, you could hopefully see your motd when connecting via ssh if you're lucky enough! (/etc/motd is generated every 30 minutes by picking a random file in this repo)