Watch the Beyond 21: Chord Charts online guitar lesson by Ravi from Learn Guitar in 21 Days
The first new thing you need to learn is how to read a chord chart. By doing so, you can learn literally any chord simply using the practice principles covered here in this course.
Guitar chords are charted on simple graphs, showing you exactly where you should put your fingers on the guitar.
Watch this video and I'll show you how to relate the chord grid to your guitar fretboard. It's easy!