R-r-rules for Piano Pupils
Turns I misunderstood the concept of family chords. They are not the same as major chords.
Robin was kind enough to clarify the issue on Udemy's Q&A section, and it makes sense to me. Sort of. I understand there are thousands upon thousands of piano chords one can potentially learn. But for the sake of efficiency and health of my arms, it makes sense to only learn chords that are in songs I actually want to play.
Based on that realisation, I know what my next step is. In other news... I finished Piano and Song by Friedrich Wieck today (with the help of an excellent audio recording by Librivox volunteers). It's a strange book, written in an eloquent style that is over-the-top. I found it enjoyable for just that reason, and because it offers lots of direction and advice for both piano teachers and students.
Here's Wieck's Rules for Piano Pupils. As you read this list in your mind, do it with a stuffy english accent and roll your r's.
He also follows up with this advice: