So the notes of the Dsus2 chord are: D E A.
Here is a key that will help you read the chart:
Chord Playing Tip: Be sure that you are pressing down on the string hard enough. You should play each string one at a time to make sure you have a nice clean sound. If any of the strings buzz or sound muted, then something is not right.
Dsus2 Video Demo
The video below will further demonstrate how to play the Dsus2 guitar chord Enjoy!