If you have initiated or completed a course, and would like to start from the very beginning, there is an option to do so -- Reset Course Progress. Reset Course Progress removes all progress in a given course and clears out any saved code that you have entered.
To Reset Course Progress:
- Click on Learn and select the course and select the course that you would like to reset progress for.
- Click on View Chapter Details and select any lesson
- Click on Course Outline
- Select the option to Reset Course Progress
Note: This action cannot be undone, though XP awarded on your profile will remain intact.