To start learning 山口百恵 - ひと夏の経験 chords, build your understanding on these basic chords - Cm, Gm, Eb, D, Gm, Cm, D, Eb, Cm, Gm and F in sequence. I suggest starting at a calm pace of 76 BPM, and as you gain confidence, approach the song's BPM of 153. Set the capo considering your vocal range and favored chords, aligned with the key: G Minor.