Jazz guitarist Hristo Vitchev has a new book titled “Add9 Triad Workout” (major/melodic minor). These diatonic Add9 triad exercises present a very comprehensive way to look at the fretboard through a vertical and horizontal perspective and to understand the shortest voice movement necessary for their execution.
All exercises are presented in the key of F major and F melodic minor.
Buy the book from gumroad.com/hristovitchev