You need Node.js installed on your machine. Simply download the installer from nodejs.org and go through the installation steps.
You need to install Yarn see: https://yarnpkg.com/lang/en/
Once Node.js and yarn is installed, open your command prompt or terminal and navigate into this project folder. There, run npm install or yarn to install all required dependencies.
Finally, run npm start or yarn start to start the development server and visit localhost:8080 to see the running application.