The electronic book chords and notes for ukulele volume 1 is 31 pages of explanations of the ukulele chords: major, minor, maj7, m7, m7b5, dim7, sus2, sus4,, 7sus4, m6, 6, 9, m9, dim, aug ... (in all tones), the notes on the neck in 1st and 5th position, the rhythmic values in 4 and 8 and the explanation of the principle of the chords.