To start learning Mr - 森林 chords, delve into these chords sequence to get the song's feel: Gm, C, F, Am, Dm, Bb, F, Bb, Am, Bb and Am. For a smooth transition, initiate your practice at 75 BPM and gradually match the song's pace of 150 BPM. For a balanced pitch, adjust the capo with respect to your voice and the song's key: F Major.