This is the main guitar line. It, or minor variations of it, repeats 
throughout the song.

    Am            Dm            G 
E |-------0-------------1---------------3-----------------------|
B |---------1---------3---3---------------3---------------------|
G |-----2-----2-----2-------2---------0-----0-------0-----0-----|
D |---2---------0-0-----------------0-------------0-----0-------|
A |-0-------------------------0---2-----------0-3-----2-----3-2-|
E |-----------------------------3-------------------------------|
The chorus is basically:
F  G  Am 
And, according to Guitar for the Practicing Musician, the loud
distorted chords in the middle of the song are:
C5  G/B  A5  G5  F5  G5  A5