Finishing this level you will have no serious problems expressing yourself. This is the equivalent of B1-B1+ CEFR, which means quite a lot of freedom in the practical use of English. The course is open, but I am writing it together with you, relying on your feedback and expectations.
After you click “Join the course”, you will be redirected to a page where you need to self-enrol with your email. Please, check your email afterwards, and confirm the registration. If you log out, use your email and password then to enter the course from this page or “Your Courses” page.