To start learning Mari Iijima - Tenshi No Enogu chords, build your understanding on these basic chords - F#m, B, G, Bm, A, B and Bm in sequence. To build a solid grasp, start slowly at 65 BPM and then match the original tempo of 131 BPM. Adjust the capo based on your vocal range and chord preference, keeping the song's key of B Minor in mind.