How to change your Zoom background

It's very clear that one company uniquely suited for life during the coronavirus pandemic is Zoom. 
Despite privacy concerns, hundreds of thousands of people around the world have recently downloaded the video conferencing app. 
People are using Zoom to connect with coworkers while working from home. Educators are using Zoom to teach their students thanks, in part, to Zoom making it free to schoolsTeens are even using Zoom to hang out with friends.
One thing everyone experimenting with