Having introduced 5 chord shapes for DADGAD tuning, let's turn our attention to open D (aka D A D F# A D). As with DADGAD, drop the sixth string down a tone to D, then drop the first and second ...
To retune into open G from standard tuning, drop the sixth, fifth and first strings down a tone. The open strings form a G chord, but, where open D tuning has its root note in the bass ...