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?
Meeting up with people, no phone. You arrange a place and a time, and you show up, if the other person isn’t there… You wait.
It was super important not to leave people hanging