Let's start jamming Green Day - Whatsername chords, familiarize yourself with these chords - G, A, G, D, F#, Bm, F#, B, D and G in sequence. You can use ChordU's Free Tempo controller to start at a slower pace and then gradually increase your speed. With D Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.
