I’ve been playing guitar for over a decade now. But all I really know how to do is pull up a song tutorial on YouTube and learn it. My learning speed has gone up over the years — my understanding hasn’t. I’ll play a song perfectly the day I learn it, then forget how it goes two days later. Why? Because I don’t understand the basics. I know the chords and where they sit on the fret, but not the reason a particular family of chords is used in a particular song. Music would be so much more fun if I could just play whatever’s in my head. I know that takes a lot of practice in the right direction, and I’m finally starting to understand the basics — theory, notes, families of chords. To document that, I built this guitar practice tracker, so I know what I still need to learn and whether I’m practicing enough. ...