Zoom is a product owned and operated by a private company.
If you ever want to practice with Zoom software, a test "meeting" is online at:
You would be the only person in a test meeting. It’s just to try out the buttons, your microphone, and your camera. It is not recorded. Test meetings end automatically after a few minutes. It’s OK to try it as much as you like.
An instructor at Cornell University put together a twelve minute video explaining Zoom for college students. It’s about twelve minutes, but it does a good job of covering things that come up in classes. Here is a short version of the video’s internet address: