When you are ready to take a quiz, you click on the "My Progress" heading on the class page. If you have been listening to a lecture and the My Progress link doesn't appear when you go back to the class page, please click on the My Certificates link in the gray bar at the top, then click on the certificate link, then the class you are taking. Click on the "My progress" link and you will see the list of quizzes. This a glitch in the programming that we hope to fix soon.