extremely simple. the main guitar riff goes like this.


e-------------------------------------------------------------------------|
B-------------------------------------------------------------------------|
G-------------------------------------------------------------------------|
D-------------------------------------------------------------------------|
A-------------------------------------------------------------------------|
E-0-0-0-0-0-0-5-5-3-3-3-3-3-3-10-10-12-12-12-12-12-12-5-5-3-3-3-3-3-3-5-5-|

and repeat this over and over and thats the whole song. theres little high notes every 
and then but all you really need is this core part.