To learn Estopa - Pesadilla chords, your first step should be understanding these chords - Dm, Gm, A, Dm, F, Dm, Gm and C in sequence. I suggest starting at a calm pace of 47 BPM, and as you gain confidence, approach the song's BPM of 95. Fine-tune the capo based on your vocal range, ensuring it complements the key of D Minor.