The sus2 chord
The sus 2 chord (suspended 2 or add 9) is a beautiful chord that adds color to a major chord. To get a sus 2 chord add the 2nd interval of the major scale to the major triad. The major triad has the intervals 1, 3, 5. You may need to delete the 1 or 3 replacing it with the 2 to accommodate the chord fingering. An easy way to find the 2 is adding the note that is one whole tone above the chord as shown below:
C chord add a D note
D chord add a E note
E chord add a F# note
F chord add a G note
G chord add a A note
A chord add a B note
B chord add a C# note
I hope this helps. Visit Guitar Goodies at guitarlessonsbybrian.com for freebies.