I've installed Github for Mac.
I've realised that I need to get to the command line to do some stuff.
There is an option in Guthub for Mac to install a command line. All this seems to do is create an alias called Github in /usr/local/bin that points back to the Github for Mac application.
Double clicking it opens a terminal window and then Github for Mac.
Any ideas how to get Git to work in a command line?
Its a relatively clean version of Lion OS X
https://help.github.com/articles/set-up-git#platform-mac
Should walk you though installing it.