To jam and learn the simple chords for 海龟先生 - 微笑 chords, practice playing A, B, A, B, E, B, C#, F#, C#, C#m, E and B in sequence. I suggest starting at a calm pace of 56 BPM, and as you gain confidence, approach the song's BPM of 112. Considering your vocal pitch and chord choices, adjust the capo in accordance with the key: E Major.