An example site can be found here.
This Gatsby template is a simple, static site for displaying your notes written in markdown is a visually readable way. It also acts as a form of management over your notes.
To add new subjects just create a directory called subject_name under the pages directory and then for each new topics within the subject you can create a folder with that name and an index.md with the notes for that topic.
To run in development: gatsby develop