This is a very easy to play song as it is only 3 chords. To make it sound like a tune 
a beat, try to incorporate some finger picking with string tapping.

Chords: Am, G, Dm

[Am]I need a [G]dollar dollar, a [Dm]dollar is what I [Dm]need
hey hey
[Am]Well I need a [G]dollar dollar, a dollar is what I [Dm]need
hey hey
[Am]And I said I need [G]dollar dollar, a [Dm]dollar is what I [Dm]need
[Am]And if I share with you my [G]story would you [Dm]share your dollar with [Dm]me

Bad times are comin and I reap what I don't sow
hey hey
..........

And so on, the chords are the same throughout. Hope you like it, enjoy.