To learn 黃玠 - 下雨的晚上 chords, your first step should be understanding these chords - G, D, F#m, G, E, F#m, D, Bm and F#m in sequence. A strategic approach would be to train at 64 BPM initially, and then accelerate to the song's tempo of 128. Fine-tune the capo based on your vocal range, ensuring it complements the key of G Major.