Open Microsoft Teams and locate your meeting in the calendar. Click on the meeting and select Join (green circle below).
If you are accessing the meeting from the web, your web browser will ask you to share audio and video (yellow circle below). Click Allow to share your audio and video.
Next make sure to toggle on your camera (yellow arrow below) and your microphone (green arrow below). Finally, click Join now (orange arrow below).
You have now successfully connected to your Microsoft Teams meeting.