The goal of this project is to provide a roadmap for hands-on exploration and experimentation with monads. It is still rough and there is a fair amount content that could be added.
The site is a static site generated with Hakyll. To make edits to the text or to add new sets/exercises, you should edit the markdown files in hakyll/pages. The hakyll site generator is defined in the cabal file. After you build it, make sure the regen.sh script points to the correct location and run the script.
If you want to contribute, but don't know what to do, check out the open issues and see if you can help with anything there.