This is in the key of F however the main guitar is actually playing in the key of G with the guitar tuned down one whole step.  We will look at both of these options for learning it however for the purposes of this lesson we will not tune the guitar down.

We will start with the key of G.   Remember this will not match the record for playing along unless you tuned down.  This is however the way it is being played and we know that because you can hear the open strings ring.