String length etc etc. It depends on many factors. Each course has an expected duration which you can find on the course page, it’s typically about six weeks, but you can do it as quickly or take as long as you need. We recommend that you put aside at least an hour every day to work on your course. If you can do more, do more! We recognise that isn’t always possible and we do give advice throughout the courses on ways to carve out the time.