OK, so this song is REALLY simple. 
Make a barre 4th fret
PLuck this
/e------------------------------>\
|B--------0-5-0----------------->|
|G------6-------6--------------->|
|D----6-----------6------------->|
|A--0--------------------------->|
|E------------------------------>|
Move up ur neck.
Play this. 
/e------------------------------>\
|B-------0-2-0------------------>|
|G-----2------------------------>|
|D----2------------------------->|
|A--0--------------------------->|
|E------------------------------>|

Now this.
/e------------------------------>\
|B------------------------------>|
|G------------------------------>|
|D-6---4---2-------------------->|
|A--------------2/4------------->|
|E---0---0---0------------------>|

So that just continues throughout the whole song! God bless ya'll!