Watch the Contrapunting online guitar lesson by Rich Maloof from 50 Acoustic Guitar Licks You MUST Know
No study of acoustic guitar would be complete without at least a nod to classical technique. You don't have to pull out the Bach to rock this one. In fact, even if you have no desire to play classical, there's a lesson worth learning in here. Playing two melody lines at the same time is invaluable for training your fingers and your brain to multitask.