Progressive Guitar Young Beginners Book 3. Method book 3 extends the range to cover all the natural notes on all six strings in the open position and introduces Bb and another F# note. The C major scale is also explained. The book contains very easy arrangements of over 20 songs, using 6 simplified chord shapes (G, D7, C, G7, D and a new chord, F). Songs include Humpty Dumpty, Polly Put the Kettle On, and Diddle Diddle Dumpling.