To learn Seal - I Put A Spell On You chords, your first step should be understanding these chords - F#m, Bm, D, C#, F#m, F#, Bm, D and F#m in sequence. I suggest starting at a calm pace of 43 BPM, and as you gain confidence, approach the song's BPM of 87. Adjust the capo based on your vocal range and chord preference, keeping the song's key of F# Minor in mind.