Check out the key. See what chords they are using in the song.....
Major key I ii iii IV V vi vii* key of C is easy to start with no sharps or flats
CDEFGAB C=I, Dm=ii, Em=iii, F=IV, G=V, Am,=vii, Bm aug.=vii (I think thats right for the Bm chord)
In any case this gives you the chords that fit key of C. you'll find that I>IV>V and variations of the order of these major chords are in tons of songs.
Look up the interval between chords whole step 1/2 step for major minor keys and you can figure out what chords are used in any key.
Hope that helps and not completely confusing.