this is the main riff it isnt too difficult, use fingers 2,3 and 4 for the initial chord 
hold that shape.

Tuning: EADGBE
Capo: 2nd Fret

-------0-------------------------------------------|
-------0-------------------------------------------|
-1-----1--------4----4------------6----------------|
-2-----2--------5----5------------7---0------------|
-2--------------5----5---0---7----7---0------------|
-0----------0---3----3---0---5----5---0---7-\---3b-|

---------------------------------------------------|
------------------------0------------------------0-|
------6-------2---2b----0--------6---------------0-|
------7---0---4---4b----0--------7---0---7---7b--0-|
-5----7---0-----------------7----7---0---6---6b----|
-7----5---0-----------------5----5---0-------------|