To start learning Paul Anka - Diana chords, delve into these chords sequence to get the song's feel: E, C, D, G, Em, C, G and C. I suggest starting at a calm pace of 71 BPM, and as you gain confidence, approach the song's BPM of 142. Align the capo with your vocal depth and chord choice, bearing in mind the song's original key: G Major.