From your profile, you can create and edit lists of preferred courses to have them always at hand.
Creating your list is very easy, just go to the Lists section within your profile and click on Add new list. You can add a title and choose its mode: public or private.
Once you've done this, you can start saving your favorite courses to your list!
You can create as many lists as you want and add the courses directly from the course directory (without having to re-enter your profile) by clicking on the +Lists icon that appears when you hover your mouse over the course.