Every year I realize carols weren't meant to be played on acoustic guitar. Oh yes, I've made it happen through the years, and Angels We Have Heard sounds pretty cool on EG. I've got many versions...nonetheless, each year I end up trying to make these carols warm, fun, fresh, traditional, all in the spirit of Christmas....not an easy thing.
Some places for Carols on guitar:
Guitar Chords.
CCLI.com (if you subscribe)
Betty's Carols.