Zoom worked much like the other video conference tools I have used to present. The audio worked well, as did the video, but screen sharing had some glitches (very much like other conference tools).
While Zoom offers to share a window on my screen, I could not get this to work with the Linux operating system and Firefox web browser. As soon as I started sharing a window, it went black on my screen and for everyone else. Sharing my whole screen worked, but then I could not see the chat window or video from other people. This was a little like presenting to a dark room full of people (which I have done in Indonesia, during a blackout). The window sharing may be better supported on other operating systems and browsers.