The project is far from completed. It's only a demo.
Probably you can just play with it on the demo site first.

It's not hard for tech people to install it and run it, maybe within 5 minutes.

But for non-tech people, there are many steps to go and you may make mistakes on any one of them.
Please ask a tech people to help you install it.
Here is the brief steps:

1. install node.js from nodejs.org. see https://docs.npmjs.com/getting-started/installing-node
2. install mongodb from https://www.mongodb.org/downloads;
3. download code from github
4. type "npm i" under the folder to install necessory modules.
5. modify config file in config folder to connect to mongodb.
5. type "node app" to run it.
6. open browser: http://localhost:3000 to see the site.