Enroll in any course (for free!) by visiting the course page and clicking the enroll button.
You can take any course, or course unit, at any time. And in any order. Go ahead—there’s no catch and no pressure!
You don’t need any qualifications to take the courses. You can sign up in your own time and take them at your own pace. If you find that you want some more background information, you might check out our topic pages for explanations of key concepts, or our glossary for definitions of widely used terms.