THe Main RIff of the song (intro,verse,and chorus)

I Prefer to play this song in Drop D tuning but you could also play it in standard 
E just move the frets a step higher on the E string


G|---------------------------|
D|---------------------------|
A|--7-7-7--------------------|
E|---------11-11-11--6-6-6---|

G|--------------------------------------------------|
D|--------------------------------------------------|
A|--7-7-7-9/11----------11h12h14--------------------|
E|-------------11-11-11-----------6-6-6-------------|

thisriff is played out through the whole songs excluding the little licks the bassist does 
this is the other riff you should also learn 
THis is more of a breakdown/ bridge that occurs late in the song

G|---------5h7--------7p5-------------------------------|
D|------------------------------------------------------|
A|--5-5-5------3-3-3------------------------------------|
E|-------------------------6-6-6-4/6-6-6-6-6-6-4/6-6-6--|