When playing Csus2 place the tip of the index finger on the second fret of the C string. Next the middle finger will be placed on the third fret of the E string, and the pinky on the third fret of the A string. You will have to move the tip of the middle finger back a little to accommodate the pinky. Don’t forget to pluck the open G when playing the chord. This chord isn’t too difficult, but at first be sure all the right notes are playing and that your fingers are not interfering with other strings.