So many things to learn!
I was looking into Git and GitHub and trying to figure out how to update my fork to be the same as the original repository.
Stack Overflow: How do I update a GitHub forked repository?
I also had issues logging to GitHub from the terminal (after enabling 2FA). It turns out this is a common issue.
To get React Dev Tools working in our project, I needed to disable Content-Security-Policy bit from our server file (server.js).
KeyboardEvent.keyCode is deprecated. You should use KeyboardEvent.code instead.
Looking into accessible Tabs (tab widget) and how to navigate them using the keyboard. Really good example here.