Zoom offers many resources and trainings. They offer free, live training, which many people find is the best way to learn a tool.
Live training:
https://support.zoom.us/hc/en-us/articles/360029527911-Live-Training-Webinars
Additionally, below are links to a quick start guides AND top 20 resources.
Participants and users:
https://support.zoom.us/hc/en-us/articles/206175806
Top 20 resources:
https://support.zoom.us/hc/en-us/articles/360042982391