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?
I’ve tried to read 19 century cursive journals and other historical documents. It’s impossible, and I’m old enough to have learned it at school.
There’s a reason engineers and technical disciplines used block/print letters.