If you’re a beginning guitarist, this is the place to start.  Do as Justin suggests and learn the open D, A, and E chords first.  With those, you can play a few hundred songs.  Add the next five, and you can play a few thousand.  As always, the video supplements are thorough and helpful.  Here’s the D chord video:

If you find these lessons helpful, MMT encourages you to visit Justin’s site at justinguitar.com, and make a donation there.