Remove spare wheel

Hey guys

I just bought a used AU3, but now I have a puncture in my front left tyre. How do I remove the spare wheel from its slot so I can replace it and drive my car to the mechanic and get it fixed?

I can't seem to find any tool that would fit into the socket to remove the spare wheel.

Oh and by the way, I'm 19 and this is my first car. Not much experience with cars at all.