I'd start with easy kids nursery rhymes songs to start off first just to get the hang of it...no sense playing your favorite songs first as you'll only get flustered and fustrated....
I listen to everything! Plain white t's, taylor swift, train, steven curtis chapman, sara evans, hillsong united, ect.. Just like common songs basically!
To add something to that, Basically anything country!
www.doctoruke.com is a good site for beginners. He has posted loads of easy two and three chord songs.