Lesson progress is shown by marking which ones you've completed and showing a progression through levels. For example, this lesson is completed:
Your lesson's 'Guide' section (New to chess, Beginner, Intermediate, Advanced) will also show a percentage of total completion, as well as individual lesson sections:
If you've been away from Chess.com for a while and want to start fresh on your progress, or maybe you have completed all the lessons and want to start over, there is an easy way to clear your progress in Lessons or Drills!
How to reset your Lessons progress
Click on 'Settings' in the lower left of any page on Chess.com.
Select 'Lessons' from the menu on the left.
Click 'Reset Lessons Training' to reset your lessons' progress. Once training is reset, your lessons page will show as if you are a new member with no progress.
This will not affect what access you have to any lessons based on your membership, but will only clear the completed status of your lessons.