Let's take a look at the files generated by create-react-app, so that we can get an understanding of the structure of a React-based application. We will find these files and folders inside of the HELLO-REACT folder as shown in the following screenshot:
In the root folder, we can see a README.md file, the package.json file, and the .gitignore file.
The README document contains references to all you need to start building a React-based application. It is written in Markdown format, and you can integrate or overwrite it with your own documentation.