This is a fairly simple song to play.
Simple chord progression that Marty does is enhanced with his freestyle form.
Good luck and don't be afraid to try something different.
The second half of the first verse is not in the album version, but if you listen to 
early recordings of this, you will hear this verse.
I liked it so I added it in.  Impress you friends.

Intro:   G (320003@1) D/F# (200232@1)F (133211@1) C (x32010@1) Cm (x3101x@1)G (320003@1)D(Play (xx0232@1)an open C and then a bar Cm. Sounds better)

G (320003@1)            D/F# (200232@1)         F (133211@1)            CYou (x32010@1)and I here all alone      Sunday morning here at home
    Cm (x3101x@1)                G (320003@1)                  DThe (xx0232@1)sky is blue as the coffees strong   It's true

G (320003@1)              D/F# (200232@1)            F (133211@1)                     CFar (x32010@1)away on this ocean blue        Just cross town on East Avenue
           Cm (x3101x@1)                                   GI'm (320003@1)in the grocery line but I might as well be in Timbuktu
         DMy (xx0232@1)minds wandering

F (133211@1)                            C/E (x3111x@5)                      GBut (320003@1)then I open my eyes           To this dream realized In front of me
         F (133211@1)                                      C/E (x3111x@5)                
  DOh (xx0232@1)and I haven't got a clue            What in the world is happening to me

G (320003@1)                  D/F#I (200232@1)think I'm happy      Like the first day of summer vacation
F (133211@1)                         CHappy (x32010@1)      when I get some rest and relaxation
Cm (x3101x@1)                  G (320003@1)                                      DHappy (xx0232@1)      like the choir on Sunday morning         Sweet and true

G (320003@1)                D/F# (200232@1)              F (133211@1)               COo (x32010@1)sister when you cook that way       Sweet distraction rules the day
    Cm (x3101x@1)                GThe (320003@1)kitchen table honey just might break
        DTo (xx0232@1)the sound of you and I rockin our bodies

F (133211@1)                          C/E (x3111x@5)                           GI (320003@1)don't understand why I wasn't your lover man     A hundred years ago
                     FThe (133211@1)fellas are gonna have to understand
              C/E (x3111x@5)                  DAnd (xx0232@1)tip their hats to the man who scored

G (320003@1)            D/F#Hot (200232@1)damn I'm so happy    Like lovin you all night long
F (133211@1)               CHappy (x32010@1)    and sleeping on our front lawn
Cm (x3101x@1)           G (320003@1)                             DHappy (xx0232@1)    like hearing my favorite song on the radio
DTake (xx0232@1)me to the bridge

C (x32010@1)             Cm (x3101x@1)     GCuz (320003@1)I've been round this world a hundred times
       C (x32010@1)                  Cm (x3101x@1)        GAnd (320003@1)I never knew love could happen this way
     C (x32010@1)          Cm (x3101x@1)        GI (320003@1)think of you so often and I know that you are
               DThinking (xx0232@1)of me too

G (320003@1)                 D/F#That (200232@1)makes me so happy      like the first day of summer vacation
F (133211@1)           C (x32010@1)                      CmHappy (x3101x@1)  apple pie and relaxation
     G (320003@1)                                    DLike (xx0232@1)peace all round the world we're living on

End:  C (x32010@1)Cm (x3101x@1) G