An engaging and very interesting course run by Future Learn via the Open University. The course ran for six weeks, a few hours per night. More than the three suggested. It consisted of video and slide shows along with discussion with fellow students via the website. I got around 86% pass in my final test. I did make a couple of silly mistakes.
I tried a later one on brands of the world but ironically for a course in communications it was terrible and not engaging at all.
Anyway, something to add to the c.v.