this intro is a standard C and a standard Am all you do is finger pick it to the sound like he does...youll get it 
 
E-------------------------------------------------------------------------------------------------------------- 
B------------1--1-----1-----------1--1---1-------------1--1------1----------1--1---1------------------ 
G----------0------0--------------2-----2---------------0------0--------------2-----2--------------------- 
D-------2----------------------2---------------------2----------------------2------------------------------- 
A---3----------------------0---------------------3----------------------0----------------------------------- 
E--------------------------------------------------------------------------------------------------------------