Watch the movie War Games sometime if you have any interest in seeing how things were done back before computers were everywhere. It’s a real time-capsule from 1983, full of modems and rotary telephones and libraries with card catalogs and micro-fiche and pay phones and lots more old-timey stuff.
If you’ve ever wondered how people solved other kinds of problems in the past, without benefit of modern technologies, then go look at Low-tech Magazine. From discussions of transport efficiency of electric cars or passenger planes over the years, to how to lift multi-ton stones to build a pyramid.
Overall, a nice reminder of what can be accomplished even without computers, electricity or internal combustion.