Below are links to instructions describing how to join different types of meetings.
Click Here - Zoom Meeting
Click Here - Join Zoom Meeting by Phone
Click Here - Zoom Video Tutorials
Click Here - Google Hangouts Meet
Click Here - Join Google Meet by Phone
Click Here - Microsoft Team
Click Here - Microsoft Team by Phone
Troubleshooting issues in online meetings
Click Here - Zoom Troubleshooting
Click Here - Google Meet Troubleshooting (Camera, Sound)