To start learning Brad - Buttercup chords, delve into these chords sequence to get the song's feel: Dm, F, Eb, F, Bb, Am and Gm. I suggest starting at a calm pace of 63 BPM, and as you gain confidence, approach the song's BPM of 126. Adjust the capo based on your vocal range and chord preference, keeping the song's key of B Major in mind.