This is the way me and my band play this song. It's probably not the"right" way, but I was playing around one day and came up with this, and it sounds just like it's supposed to. It is very easy, even a beginner should get this.

The tuning is dropped D (from low string to high string, this is D, A, D, G, B, e)

Intro/Verses:
D--0-0-0-4-4-4-5-5-5-4-4-4-
A--0-0-0-4-4-4-5-5-5-4-4-4-
D--0-0-0-4-4-4-5-5-5-4-4-4-  (repeat several times)
G--------------------------
B--------------------------
e--------------------------

Chorus:
D--0-12-11-11-11--
A--0-12-11-11-11--
D--0-12-11-11-11--
G----------------- (repeat several times)
B-----------------
e-----------------