Let's start jamming 李碧華 - 庭院深深 chords, familiarize yourself with these chords - C#m, F#, B, C#m, G#m, C#m and B in sequence. I suggest starting at a calm pace of 41 BPM, and as you gain confidence, approach the song's BPM of 82. To match your vocal range and chord inclination, adjust the capo in line with the key: B Major.