...
Any course you self register for will appear under your Courses and Communities widget the same way that an academic course appears. Some self-registration courses will be removed from your course homepage if they are no longer needed.
Step-by-step guide
Click the Self Registration link along the top of the System-level navbar.
You will be taken to the Self Registration page where you can choose the appropriate course to complete.
Click on the appropriate link under Course Offering Name to register.
...