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 pink block around a step number means you've started it but not completed it.
- a white block around a step number means you haven't opened the step.
For your progress to show as 100% you need to complete every step of the course. This 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 currently be able to complete it 100%.