before you start looking for a nice song or music to play, its better to think first what you'd really like.
there are lots of genre available and dont get hoaxed by a "30 min play-like-a-pro system". playing any instrument requires one to be patient.
I usually encourage my student to listen first to their favorite music
then I let them decide the kind of music they'd want to learn (rock, pop or classicals)
if they want to learn in a day or 2, I teach them note reading and they play guitar solos or duets (classicals) and master them within a week
if they want to learn in a week, I teach them accompanyment(pop or rock) and master them in 2-3 weeks depending on their discipline and learning ability.
don't get discouraged if your a bit rusty. let me know how may I help you. e-mail me at tri5kmark@yahoo.com