Make sure you have submitted an application with the mentoring office. For students, this application can be accessed by clicking on "Student Info and Application" to the left. (You do not have to resubmit a student application each semester. If you have previously completed Steps 1 and 2, go straight to Step 3.)
Make sure your desired mentor has submitted an application as well. For potential mentors, this application can be accessed by clicking on "Become a Mentor" to the left. Your mentor does not have to resubmit an application if they have done so in the past. If you are unsure about whether your mentor has submitted an application before, please check with the mentoring office.
Once you have received notice of acceptance through the Mentoring Office, you may register for mentoring courses through your Self-Serve account like you do for other classes.