To learn Hololive Idol Project - 夢見る空へ chords, your first step should be understanding these chords - Ab, Bb, Gb, Eb, Em, C, D and G in sequence. A strategic approach would be to train at 44 BPM initially, and then accelerate to the song's tempo of 90. Configure the capo to your vocal range and chord preference, remembering the key of G Major.