To learn 相川七瀬 - Nostalgia chords, your first step should be understanding these chords - A, D, E, C#m, F#m, D, F#m and E in sequence. A strategic approach would be to train at 46 BPM initially, and then accelerate to the song's tempo of 94. With A Major as the song's key, tweak the capo to cater to your vocal pitch and chord likes.