Have a clear course path depending on the skill you want to improve
There is already a recommended order for the courses https://support.21-draw.com/support/solutions/articles/60000672741-is-there-a-suggested-order-to-take-the-courses. But it will be better if it was implemented in the course list.
We could have a menu that says like: "How to start with..." or "How to improve with..." then when you click on one of it, you will access the courses that are matching with a clear path "Take course 1, then 2 etc" with a clear explanation of "if you are here, this course will bring you there"