I'd not intended to overlap courses on Future Learn, because I thought it might end up feeling like it was taking up too much of my time. I was right, but I'm still glad I took the Literature of the English Country House course even tho it has overlapped with two courses that I'd already signed up for.
The third course I've done on Future Learn was about archaeology & the Roman port Portus. And sadly I found it a bit disappointing. The course was run by Southampton University, whose archaeology department are one of the partners in the excavation of the site at Portus. Portus is in Italy, near Rome & to the west of it. From the 1st Century AD it was the main port serving the city of Rome, remaining in use until the 7th Century.