Watch the Alternate Picking online guitar lesson by Chris Buono from 60 Electric Guitar Techniques You MUST Know
Alternate picking, AKA flatpicking, is all about alternating downstrokes and upstrokes. Not only does alternate picking provide a more efficient approach to picking single notes it also helps produce varying tones as well as varying dynamics.
Looking for inspiration? I've always stopped dead in my tracks to watch John McLaughlin as well as Vinnie Moore and Pat Martino alternate pick. It's almost unfair. To start developing your own alternate picking supremacy, be sure to check out my Guitar Gym: Alternate Picking Workouts
course for a collection of workouts to help get your technique up and running.