Students on Windows should install git for windows. This will also give you a new terminal with a bash shell (in addition to windows command.com), which is the standard command line shell on unix like systems.
Mac users have git pre-installed. If you are a linux user, we'll assume you know what you are doing and have installed git.
We'll be using https://github.com/univai/toplay . We're gonna fork this repository and play with it.
On all OS's open a terminal with bash/zsh running. On OSX this is Terminal.app, on linux New Terminal, and on windows git-bash terminal.