Guthrie Trapp's CAGED / 1-4-5 method — the core concepts, then seven transposable exercises. Pick a key, turn on the drone, and play.
Almost everything reduces to three chord qualities. The major triad (R · 3 · 5), the minor (R · ♭3 · 5), and the dominant 7 (R · 3 · 5 · ♭7). Learn to hear and find these three on the neck and the rest of CAGED hangs off them. Shown here as the E shape on G.
One chord, five fingerings — the open C, A, G, E, D shapes made movable and chained up the neck. Each shape's root hands the baton to the next, so they tile the whole fretboard. Here is the G chord in all five shapes.
Run the major scale up and down in groups of three eighth-notes + an eighth rest, arranged so the 1st and 3rd note of every group land on a chord tone (solid dots below). The rest gives you breathing room and resets the pattern. Because the strong notes are always chord tones, anything you play sounds resolved over the changes. Dimmed dots are passing tones.
Solid = chord tones (landing notes) · dimmed = passing tones · G major.
The course also drills triads in groups of three and the full scale / arpeggio / pentatonic matrix for each shape. Those already live in Shred Dojo's reference tools — jump straight in: