How did Guitar George know all the guitar chords? He knew how to make them from scratch is how! No chord books. All in his head! To make all the chords you need to understand where chord names come from. In this series of interval and music theory lessons for guitar (yes, it applies to other instruments too I break down everything you need to know so you don’t have to rely on chord cheat sheets. More videos in this series coming up! THERE IS HOMEWORK!.