Watch the Power Chord Do's and Don'ts online guitar lesson by Rich Maloof from Guitar 201: Breakthroughs

Power chords are sometimes referred as “root 5” or “5 chords.” Formed with just two notes (the root and the 5th of a chord), power chords fall easily under hand and are a go-to chord in many situations. They appear in all different musical styles, and are great for grabbing the bare essence of rhythm part in a pinch. Power chords lack the 3rd degree of a chord, which gives the chord a lot of color, so just know what you’re missing when you use them.