Guides
The things a chord chart assumes you already know, written by Nik Donovic. Each one links into the chord library and the fretboard, so you can hear the examples as you read.
How to read a guitar chord diagram
What the lines, dots, numbers, circles and crosses on a chord chart mean, how barres and fret numbers are drawn, and how to turn x32010 into a C chord.
How guitar chords get their names
Why C E G is C major and C E G B D is Cmaj9: intervals, triads, sevenths, sus and add chords, and how to name a shape you found by accident.
Slash chords and inversions on guitar
What C/E and G/B mean, the shapes for the common slash chords, and how a moving bass note under the same chord makes a progression walk.
Barre chords and the CAGED system
How the E and A shapes become barre chords for every root, how to get a barre to ring, and how five open shapes map out any chord across the whole neck.
How to use a capo, with a transposing chart
What a capo changes and what it doesn't, which shapes to play for any key, a capo chart for the common shapes, and how to clamp it so nothing goes sharp.
Alternate guitar tunings: drop D, open G, DADGAD and more
How to get into drop D, open G, open D, DADGAD and the tuned-down tunings, what each one is good for, and chord shapes that work in them.