Dead Strings When Playing Chords

Nicole writes:
I am having trouble with my finger placement when I play the G major and C major chords. It seems like no matter what I do, my index finger is always touching the string below it, so I can't get a clear ring. Any help would be greatly appreciated.
This is a very common beginner problem, and is often the result of poor fret-hand positioning. As a result of Nicole's question, I created a feature to help beginners avoid playing chords with muffled and dead strings.
Tips on Playing Chords.