This song is very easy and If you listen closely there's a variation in the Intro/Verse that occurs twice.

Intro/Verse

G-------------------------------------------------------------------------------]
D-------------------------------------------------------------------------------]
A-------------------------------------------------------------------------------]
E-0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0--0-0]

Pre-Chorus

G--------------------------------------------------------------------------]
D--------------------------------------------------------------------------]
A--------------------------------------------------------------------------]
E-8-8-8-8-8-8-8-8-5-5-5-5-5-5-5-5-8-8-8-8-8-8-8-8-10-10-10-10-10-10-10-10--]

Chorus

G-------------------------------------------------------------------------------------]
D-------------------------------------------------------------------------------------]
A-------------------------------------------------------------------------------------]
E-0-0--0-0--0-0--0-0--5-5--5-5--10-10--7-7--0-0--0-0--0-0--0-0--5-5--5-5--10-10--7-7]