This is a quick reference guide to essential guitar chord forms. On each type of chord you will see the chord spelled out in notation with the chordal relationships also shown (Root, b3rd, 7th, etc.). You will also be shown the three most popular forms of that type of chord in three different locations on the guitar fingerboard. Also, for each key a finge rboard diagram is presented showing the location of every Tonic or Root tone in that specific key.