To learn 劉文正 - 童年 chords, your practice should emphasize these chord progressions: A, D, E, A, F#m, C#m, F#m and D. Start with a comfortable 65 BPM and as you become proficient, aim for the song's BPM of 131. Adjust the capo based on your vocal range and chord preference, keeping the song's key of D Major in mind.