Students: use the username and password sent to you in your invitation email. Once logged in, find your class, take quizzes as many times as you like, and check your personal readiness score and the class leaderboard.
Professors: log in with the email and password you created when you registered. Once inside, create quizzes, enroll students, track class readiness, and view question-level stats.
Register is for new Professors only — students are enrolled by their professor.