code.mios.com and Git for Dummies

I now have a code.mios.com account with developer access to a managed plug-in (squeezebox). I’m just looking for a couple pointers to get me started with the basics of checking out files, and checking back in (committing?)

It’s managed via git…I know what the repository URL is, and um…that’s it. There’s no obvious mechanism via gitweb to check-out files / upload new ones, etc.

Do I use a client side app (GitHuB?) to connect with the repository for checking in / out?

I did a quick search here and found some info related to SVN, but not git. I could just ditch the idea using the repository and just download the files and go at it, but I’d rather keep with the code management scheme that was put in place.