generally if you know some geography ie what towns and cities you want to drive in the direction of, you can then usually find what you want following the road signs to smaller places when you get there.
I drove all over the UK, going up to Scotland and over to Europe relying on nothing but a quick look at a map before setting off.
How to read a clock? I was taught how to find north with naught but a wrist watch

No idea if they teach map reading though..yet. No Satnav when I did my test in 2002 although we got the joy of the theory test...before the hazard perception test though.
I did similar direction finding...until all my mates went to uni. Finding a student house in Liverpool or York, Leeds, Sheffield or Edinburgh was always an adventure.
It's fine for going between two big population centres...but the last 5 miles can become the last 20 miles very easily.
Daft really most the time I'll set it away from home and know that largely I have no interest in it until maybe last 10 mins of the trip, at which point I might go as far as unmuting it. Mainly it's there to answer the question "are we nearly there yet?"