If you would like to learn more about how to use the online classroom, as well as troubleshooting tips, we are running daily seminars Monday to Friday for tutors! You can see how to join one here.
We do very strongly suggest using a headset with a microphone to eliminate echoing and feedback ruining the quality of your audio. However, if you are unable to find a headset with a microphone integrated, the Classroom will still work for you - just make sure you, at the very least, use headphones to stop the audio feeding back to the other person in the Classroom!
PLEASE NOTE: using Apple headphones with a Mac may cause an echo