I suppose it would be mostly practical skills, cooking, fixing things. Usually had to be done by people themselves.
Maybe also mental things like navigating (with or without paper map) and remembering their daily and weekly agendas.
What other things would be a big difference with the people today?
Operating a slide rule. Managing a menstruation belt. Navigating adult life without having your own bank account (if you were a woman in the US). Mending clothes, ironing clothes, making clothes.