About the Koans
There are several functional languages that have contributed their own versions of the koans. Each language has it's own branch with detailed instructions on how to get started.
To get the koans for a particular language, simply checkout the branch:
git checkout -b <branch_name>
where <branch_name> is the name of the branch (language) you want to work on. To get a list of all branches run:
git branch -a