(Guitar Educational). The CAGED system, applicable to all playing styles, will help you clearly map out the fretboard with recognizable forms and shapes that intertwine sensibly. The result is equal comfort with all areas, and the confidence to play what you want, where you want! Break free from the prison of unfamiliarity get CAGED! Covers major, mir and 7th chords, song structures, shortcuts, and info on studying theory.