The D chord contains the notes D, F# and A. It is an important new chord for playing in the key of G. The diagram shown here illustrates the D chord in root position.
In the key of G, chord I is G, chord IV is C and chord V is D. These three chords are shown here in root position for each hand.
The next three examples contain common combinations of inversions of the chords G, C and D. They will enable you to change smoothly between these chords with the right hand.