Summary: You can self-enroll in a course by clicking on the enrollment link. You will need to create an account or sign in through your institution.
Step 1: After you click on the enrollment link, you will see the course and need to click on the "Enroll" button.
Step2 : If you already have a Credo account, you can simply Sign In. If you do not have an account yet, you can create one by setting up your email, username, and password. Some institutions have set it up where you can click on Sign In With My Institution and use your school credentials. See the following guides for how to sign in via that method: