Start by placing your first finger on the first fret of the first string. Now, put your second finger on the second fret of the third string. Lastly, add your third finger to the third fret of the second string. Now, strum only the bottom four strings.
Check to see if your chord is ringing clearly. Watch the Dminor chord... be sure you are only strumming the bottom four strings... otherwise, the chord might not sound so nice!