You can see which steps you've completed in a week on your to-do list:
- a blue block around a step number means you've completed it
- a white block around a step number means you haven't completed it
- a pink block around a step number means it's the first uncompleted step of the week
When you've completed every step of a course, your progress will show as 100%. Completing every step means clicking the 'mark as complete' button at the end of every article, video, exercise and discussion, and taking any quizzes or tests.
If a course has tests and you're studying it for free, you won't be able to complete it 100%.