You can join a Zoom meeting from 2 places: 1) In Your Course's Navigation or 2) In Your Canvas To-do Area

1) In Your Course's Navigation

Click Zoom in your course's Navigation

Click Join, ****to the right of today's meeting

Click Open Zoom Meetings (If you have not downloaded Zoom before it will ask to download it)

2) In Your Canvas To-do Area

From the to-do area, click on the calendar event

Click on Click here to join Zoom Meeting under Details

Click Join with Computer Audio or Test Speaker and Microphone to begin joining your class meeting