Number System for the Major and Natural Minor Scales. The method that will be presented will give you a clear understanding of the fretboard. This book is based on learning and playing the Major and Natural Minor Scales. This method will greatly reduce the time for learning the fretboard. The concepts presented in this book, will enable beginner or intermediate guitarist. That has been struggling with scales, and confusing on how to be able to change keys, without learning a new Key. This method will give you a better insight into what an Intervals is, how to construct Arpeggio's, and a clear concept of the Modes of the Major Scale. This method will also relieve you of practicing the scales daily, and will give you more time to learn chords, progressions, and overall, just playing.