If you have not installed Elm, you should go to the drop-in centre and get help there.

If you have, and you have managed to unzip this, then you need to go to this directory in the terminal and type

elm-make RedBlue.elm

it will ask you whether to install required modules, and you should say yes, then on a map you type

open index.html

but on Windows you need to find it in the file explorer and click on it.

