It doesn't get any easier than With or Without You, by U2. Very simple, no complex fingerings or off-rhythm key changes, just a steady stream of leisurely paced 8th notes and equally simple lyrics and vocals.
Had my first (free) gig about 4 yaers ago at a place here called “Open Mikes”, a bar/music store, went good. Now me and my band mates play twice a month for money.
