What the CAGED System Actually Is
CAGED sounds like a complicated theoretical system, but it's really just an observation: the five open chords - C, A, G, E, D - can be slid up the neck using a barre, and together they cover the entire fretboard with the same harmony.
Five shapes you already know
If the open chords C, A, G, E, and D are already familiar (see the article on the first chords to learn), CAGED adds nothing new to memorize - it just shows that each of those five shapes can be played anywhere on the neck by barring instead of using open strings. An F chord, for instance, is just the E shape slid up one fret with a barre.
Why these five letters, and in this order
The name CAGED is the order the shapes follow as they climb the neck for the same chord: the C shape turns into the A shape, that into the G shape, and so on around the cycle, coming back to C an octave up. It's not an alphabetical coincidence - it's the actual sequence of shapes on the neck.
One key, five spots on the neck
Any chord (not just C, A, G, E, D) can be played in any of the five CAGED shapes somewhere on the neck - meaning the same chord is physically available in five different places, not just one fixed spot. That's exactly what gives you the freedom to pick a convenient position instead of being tied to one memorized fingering.
Where to start with CAGED
Don't try to learn all five shapes for one chord at once. Take a chord you already know open, find its barre version a few frets up (usually an E or A shape), and drill the transition between the open and barre versions of that same chord - only then add the next shape.
What it's actually for
CAGED gives you a vocabulary for talking about where a chord or note is on the neck - not abstract theory, but a practical tool: if a solo is stuck in one position (see the article on connecting pentatonic positions), CAGED helps you see exactly where to move, because it shows how chord shapes and scales connect at the same spot on the neck.
Try it in practice
Open chord trainer