Originally Posted by: tuffshedI started the Basic course and went on for a while, later I went back and started marking each lesson as completed (I'm Done) but they never show up in my Progress. Is this a bug? Can I not complete lessons I've already taken? Is there an easier way to mark all the lessons I've completed?

Try this first - are you clicking the “I’m done” button twice? First, to confirm marking it done and to share on GT, and second, to make it go through with the green progress bar showing.

Can you verify you've done this?