[wyclif]

Richard Lloyd (formerly the guitarist for the proto-punk band Television) has a few great lessons on YouTube that teach theory and the circle of fifths very effectively:

https://youtu.be/mNmEq-cP9Oo https://youtu.be/9lSifKZ80H4 https://youtu.be/fjWFqz1Sjps

Lloyd is a bit eccentric in person and in his methods—he's very opinionated, but IMO that's one of the things that makes him a great guitar teacher.