Capo en 2nd Fret,
The song is just these chords over and over.

At the bridge you strum it only 1 time a chord. 

D - A - F#m - Am

Strumming patern: chorus and couplet

D-U-D-D-U-D

Strumming patern bridge:

only down strums

try to listen to the rythm, and play along with the song. 

It's easy though!

Goodluck!