Watch the Chords, Bar Chords & Power Chords online guitar lesson by Kelly Richey from Focus On: Blues-Rock Power Trio

This lesson looks at a few different chord options:

Open Chords vs. Barre Chords
Barre Chords vs. Power Chords
Barre Chord w/ Embellishments and Substitutions - Major, Minor, 7th, 7#9 Chords