Before you get confused, let me tell you that the chord names are correct. However, they may not correct relative to the tuning. For example The first chord should be C#, but the guitar would be down a halfstep the chord is really a C. Sorry if this is confusing, but the song is probably played in Drop D and i prefer not to play in drop D so i you are still confused. *Edit: If you decide to play it in the down-a-half-step tuning, you may find it easier to read by going looking to the left of (azchords.com)