I will take you on a deep dive into React Hooks, and show you what you need to know to start using them in your applications right away.
To get the app up and running (and really see if it worked), run:
npm start
This should start up your browser. If you're familiar, this is a standard react-scripts application.
You can also open the deployment of the app on Netlify.
npm test
This will start Jest in watch mode. Read the output and play around with it. The tests are there to help you reach the final version, however sometimes you can accomplish the task and the tests still fail if you implement things differently than I do in my solution, so don't look to them as a complete authority.