I use the sites to find availability and general prices, and then book directly from the carrier because changing flights or getting refunds from a 3rd party site is extremely difficult or impossible sometimes.
Usually it's only 20 dollars more, but it can be really worth it if your connecting flight is late.
right they are different, and it does take a bit of time to figure it out. I had to puzzle over it for a couple of days, but when you do get it, the next time, it might take only an hour or 10 minutes even if you already have the photos and screen shots in your phone.
Having to print out actual paper documents is way more difficult in the end.
Us old people can learn this stuff, after all we learned all the other stuff to make it this far in life.
I didn't grow up with computers either (which is unnecessary if you have a phone). Yet here we all are communicating via computer networks. It's never to late to learn something new.
If you're holding a phone, all one has to do is push a button and ask it. Being old is not an excuse to not being able to learn something new and actually quite simple.