I started using Git in the beginning of 2008, when I started working for Versabanq (London, ON, Canada). I had almost no idea how to use it, just the really basic stuff from Subversion (and I used to use a GUI for svn - subclipse).
So, for those like me, here goes the basic part on how to start with it.
First we must set our global preferences.
git config --global user.name "Your Full Name"
git config --global user.email "firstname.lastname@example.org"
If you plan to use Git on Windows, you should probably set these too:
git config --global core.filemode false
git config --global core.autocrlf false
Now you go to an empty folder, where later you will add files. Let's say: /home/repo/
Then run: git init
That's all. Now you are free to create/move files into /home/repo/
To check what was added/changed, run: git status
In the next article, I'll talk about how to commit (or not), whatever you added/changed.