Building Proper Right and Left-Hand Guitar Technique Taught by: Corey Christiansen This DVD and chart will give any pick-style guitarist a great workout. Corey Christiansen presents a number of exercises and workouts for the right and left-hand. These exercises will build strength, agility, and tone. Alternate picking, crosspicking, horizontal shifting, tremolo studies, and many other studies are clearly explained on the chart and demonstrated on the DVD.