Tell your story to the world, just like your first print ("Hello World"). The directories without '_' in the beginning are user editable and can be customized as per your design requirement. For example, content/, metadata/, assests/ and site.yml. Since the theme is built on Eleventy, which is designed for a Node.js engine. You can start using this template in a single command (follow Getting Started in README.md). I haven't created a YML facility for the color scheme, which I felt was not required since it will give you a better understanding for changing the color scheme through the liquid file - _style/_components/palette.liquid.
Useful resources where can get icons and loader:
- Icons - Font Awesome
- Loader - CSS Loader