Very, very easy considering it's just four chords repeat throughout the whole song. 
the bum-bum bum-bum da-dum dum part in the song.. if you try and sing with it, it might seem 
little difficult, just to warn you). Here are the tab and chords:


p = pull off (you can chose to slide if you'd like or even play the two notes separately)

E|-----------------------------|
B|-----00-233-----00-2---------|
G|---22---------22----22-2p1---|
D|-44---------44---------------|
A|-----------------------------|
E|-----------------------------|


OR

chords-

F#m A  E  D

F#m: 224222
  A: x02220
  E: 022100
  D: xx0232

My Strumming Pattern:

v = down
^ = up

F#m   A  E      D
|v v |v v^| ^ ^|v v |