Another useful chord type is the add nine (add9) chord. These chords are either a major or minor triad with the 9th degree added. The 9th degree is the same as the second degree of the scale, but an octave higher.
Here are some more add9 chord shapes. Once you have learnt them, use them to play the examples below.
Fadd9
Gadd9
Dadd9
Aadd9
Eadd9
Here are some useful minor add9 chord shapes. The first two are used in the example below. Experiment with all these chords and substitute them for minor chords in songs.
Cmadd9
Fmadd9
Emadd9
Amadd9
Dmadd9