To learn 羅大佑 - (feat. 蔣志光) 皇后大道東 chords, your first step should be understanding these chords - Am, G and Am in sequence. A strategic approach would be to train at 58 BPM initially, and then accelerate to the song's tempo of 118. Set the capo considering your vocal range and favored chords, aligned with the key: G Major.