Steps to get hosted reactjs website?

I'm creating a reactjs web application project with create-react-app. Now it's all most ready. I did little research about how to get hostname and all. I found that https://www.netlify.com/ from this website I can able to host my website. Can anyone suggest which file I required to provide them. Like main index.js or what? Or I need to upload my whole project folder?? And what are the steps for it! Like FTP configuration and all.