Compose is a Hugo docs theme, inspired by forestry.io's.
The theme provides a simple navigation & structure.

Install a recent release of the Hugo "extended" version; ideally versions >= 0.61. If you install from hugo releases page, download the _extended version, which supports sass.
You can find an example project that uses Compose in the Compose Userguide.
The Compose Example Project is hosted at https://compose-docs.netlify.com. This project also stands as the theme's user guide.
This guide covers the necessary bits. As the project evolves, the userguide will get more comprehensive
You can use Hugo to generate and serve a local copy of the guide (also useful for testing local theme changes), making sure you have installed all the prerequisites listed above:
git clone --recurse-submodules --depth 1 https://github.com/onweru/compose.git
cd compose/exampleSite/
hugo server --themesDir ../..
Note that you need the themesDir flag when running Hugo because the site files are inside the theme repo.