To learn Ozzy Osbourne - I Dont Know chords, your practice should emphasize these chord progressions: Bm, F, D, C, D, A, G, C and F. I suggest starting at a calm pace of 67 BPM, and as you gain confidence, approach the song's BPM of 135. Considering the song's key of D Major, position your capo to suit your vocal and chord preferences.
