4, all tv related, because I rarely watch tv and never have, so that isn't age related. I was the same at 20,30,40 etc. I can, however use the tv remote.
The idea of planning 2 routes when you go on a journey is something it would never occu to me to do and I have never heard of anyone else doing it either - However I can read a map and DH and I have a lot of random cross country journeys based on 'bored now, lets turn left/right here.'