This is my bands first song, and its really  simple and easy to learn.

Basically the entire song is:

G, C, D, Am.  

Its tuned standard, played in G.  Or capo on the 3rd fret.


The backup guitars part is picking certain strings while having your fingers in
 the chord positions.

so...

G chord: E, G, A, G

C chord: A, G, D, G 

D chord: D, E, G, E (play the last E open)

Am chord: A, B, D, B (play the last B open)

Both of the parts played on top of each other sounds cool.