To start learning Merle Haggard - (Remastered) Swinging Doors chords, centre your learning around these elemetal chords sequence: G, D, G, C, G, D and C. I suggest starting at a calm pace of 61 BPM, and as you gain confidence, approach the song's BPM of 122. Fine-tune the capo based on your vocal range, ensuring it complements the key of G# Major.