To learn more about Zoom, use the Zoom Support Center. The Support Center has updated instructions, tutorial videos, and easy search. To find the Support Center, go to Zoom.com, then navigate to the bottom of the Zoom screen and click Support Center.
For example, searching 'how to add a profile image' delivers a link to instructions for adding or changing one's profile which includes adding or changing profile images: https://support.zoom.us/hc/en-us/articles/201363203-Customizing-your-profile
CLICK HERE to go directly to the Zoom Support Center