No idea on the quality. Sale ends 11/22…
If this is the same “Makerdemy” company that does the Raspberry Pi courses on Udemy, they get very high ratings there. The instructors do have quite strong accents, so watch the samples and make sure it will work for you.
#1 Raspberry Pi course on udemy, in terms of 5 star reviews (over 40)
I’ve used the Udemy course platform and it works quite well. I don’t know anything about StackSocial though. But it looks like they also have a sale at Udemy.