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?
As someone who travelled for work before and after smartphones, absolutely. You couldn’t just open Google Maps, search a business and go there, the problem wasn’t going city to city, but finding a specific place in or outside a city. If you got a request to go to X business either you already knew how to get there, or it would take some planning.
Nowadays my company can receive a request from a customer in another country, and in 1 hour they can plan the trip, reserve the rental car, book a plane, book an hotel for the night. That just wasn’t possible in the past.