npx create-react-app frontend
to start the frontend file under localhost 3000 type in terminal
cd frontend
npm start
in another terminal to start the backend under localhost 5000 type in terminal
cd backend
npm init
npm install
npm i express cors dotenv
npm i body-parser
to install nodemon type in the terminal
npm install -g nodemon
npm install --save-dev nodemon
to run the backend type
npm start