Watch the SECTION 11: More Chord Shapes online guitar lesson by Susan Mazer from Hands-On Guitar: The Beginner's Guide

We’ve already learned eight chords and you’re about to learn two more, “A7” and “E7”. The seventh chords tend to have a slightly bluesier sound. Whenever you see a 7 next to a chord you can always leave it out if you don’t know the chord. Just play what comes before, like “Am” or “E”. We’re also going to learn a new strumming pattern and a fuller way to play both C and G chords. Finally, we’ll put everything you’ve learned together into a few songs.