I started out with Gn'R, knocking on heaven's door. Basically learning to play the chords. After learning the basic chords, can more or less figure out the chords to popular songs by listening to the bass notes. And then... I discovered this thing called tabs. haha... well, that was donkey years ago, but playing still suck now. *P
When I heard More Than Words, I was so amazed! (I is from the country side lah) I wanted so much to learn that song. practiced every single day. Btw, I started out with a folk guitar, so it hurt pretty bad for a short while. I believe the most important thing is wanting to learn. Find yer cousin a song he/she really wants to learn.