Hey Willem,
Glad to hear from you. It makes me happy to know that the courses are useful. I do my best.
Which course exactly did you take? The EAs should be from the beginning of March and not January.
Please, send me the link to the lecture that you are looking at.
Regarding the other courses, they are all different. If you already have 2 courses, you better look for different assets now to diversify more.
Cheers,