Big snag is a lot of these things go back to whether you'd had some interest in them all your life - so updating then becomes fairly easy. If you've not had any interest until now learning becomes a very steep curve.
I'll give an example. Some years ago I was involved in interviewing applicants for sound jobs in TV. One little practical test was giving them a cassette recorder, power amplifier and speaker with all the necessary leads to connect them - and a few 'spares'. You might be amazed how many couldn't even make an attempt at that test.