To build this website, you will need to have the latest stable versions of Node and Yarn downloaded and installed on your machine. If you don't already have them, you can get Node here, and Yarn here.
Open the folder in your favorite terminal and run yarn install to install dependencies. Following this, run yarn dev to run the project. In your terminal you should be given the url of the running instance (usually http://localhost:3000 unless you have something else running).