git clone https://github.com/johnazre/youtube-react-with-express.git
cd youtube-react-with-express
npm install # or yarn
cd public-cra
npm install # or yarn
cd ..
nodemon
The directions above should get your node_modules installed for both the server and the create-react-app app. To change which directory is getting served, just comment/uncomment the corresponding lines in ./server.js