Chords are mostly triads which means 3 notes Root note, 3rd, 5th
Major chords formula
1 … 2 . . 3
Minor chords formula
1 . . 2 … 3
C major chord C Root > [C#, D, D#] > E > [F, F#] G
C minor chord C Root > [C#, D,] > D# > [E, F, F#] G
This is prolly advanced already but Chords don’t have to follow the exact same order ex. C major chord : C E G G E C is still C major chord
I think this is particularly useful for guitar playing as well