June 11, 2022:
Which is — absolutely and for certain — easier now.
YouTube and other Internet sources collect the necessary information and allow simple searching for the resources you require. If you want to learn "Carol", go to YouTube and search for "how to play carol on guitar". This result is a nice one: https://www.youtube.com/watch?v=FYtwIGG6KFw. I really like this guy's humility and reasonableness.
When seeking your sources is so much simplified you have no excuse for ignorance. There's a central lesson here for responsible citizenship, where the problem of course is the mountain of bullshit deliberately and manipulatively broadcast to sucker the gullible.