The main progression can be played 3 ways:
1st Way
You can basically keep your hand in
A major and stretch to fret 4 with the pinky
(I believe this is the way he plays it):
e-----------------]
B-----2-2-3-3-2-2-]
G---4-4-2-2-2-2-2-]Repeat
D---2-2-----------]
A-----------------]
E-----------------]
2nd Way:
e-------------------------]
B-------------------------]
G-------------------------]Repeat
D---9-9-11-11-12-12-11-11-]
A---7-7-7--7--7--7--7--7--]
E-------------------------]
3rd Way:
Open Chords
E-E-A-A-D-D-A-A-Repeat
Break/'Chorus'
E--9------3-5-3-5-0----------]Repeat