Lesson #2 - Single String Fingering, Pressing the String

Press down with the tip of your finger. Note the thumb position on the back of the neck is generally pointing to the head of the guitar. Place the finger right behind the fret, as close as you can make it. This will produce the cleanest sound with the least amount of pressure needed. The finger will be pressing down and the thumb on the other side of the neck will be pressing back. They will be equal and opposite forces and when used correctly, there's little involvement with the rest of the arm and shoulders. That way you are using the least number of muscles and those most efficiently.