There are probably books out there that probably do a better job than most discrete courses I can think of--i.e. an accounting course is probably too in the weeds for most people--but I agree that some sort of business/marketing/finance 101 would be useful for a lot of people (engineers as well).
There are probably books out there that probably do a better job than most discrete courses I can think of--i.e. an accounting course is probably too in the weeds for most people--but I agree that some sort of business/marketing/finance 101 would be useful for a lot of people (engineers as well).