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?
This is definitely dependent on the person writing. Some cursive is illegible, others is totally fine.
I mean, some non-cursive is totally illegible. My print is pretty bad, but my cursive is fine
That’s true. I learned cursive first, but never really properly. Then learned print instead. Now my writing is a mashup of cursive and print, with the same letter in a single sentence sometimes using different writing styles. Great!