First, you need to make sure you have Node.Js properly installed in your machine.
In the project directory, you should run:
Install all of the app dependencies. This must be done once before running/building the app.
Runs the app in the development mode.
Open http://localhost:3000 to view it in your browser.
The page will reload when you make changes.
You may also see any lint errors in the console.
Builds the app for production to the build folder.
It correctly bundles React in production mode and optimizes the build for the best performance.
The build is minified and the filenames include the hashes.
The app is ready to be deployed!