This is the main riff of the song:
[E]-x----x----x----x----------------------------------------
[B]-x----x----x----x----------------------------------------
[G]-0----x----x----x----------------------------------------
[D]-2----4----5----7----------------------------------------
[A]-2----4----5----7----------------------------------------
[E]-0----2----3----5----------------------------------------
[E]-x----x----x----x----------------------------------------
[B]-x----x----x----x----------------------------------------
[G]-0----x----x----x----------------------------------------
[D]-2----4----5----7----------------------------------------
[A]-2----4----5----7----------------------------------------
[E]-0----2----3----5----------------------------------------
Just repeat listen to the song and play.