To start learning Agust D - People chords, centre your learning around these elemetal chords sequence: A, A#m, F#, C#, Am, A#m, F and A#m. I suggest starting at a calm pace of 60 BPM, and as you gain confidence, approach the song's BPM of 120. Configure the capo to your vocal range and chord preference, remembering the key of C# Major.
