Intro: Just mess around finger picking these 3 chords, makng sure to pluck the  
high 'e' on the 2nd beat of Am Em, then delayed on the Fmaj7: 



E|-----0----------0----------0------------------------------------------------| 
B|-----1----------0----------1------------------------------------------------| 
G|-----2----------0----------2------------------------------------------------| 
D|-----2----------2----------3------------------------------------------------| 
A|-----0----------2----------3------------------------------------------------| 
E|-----x----------0----------1------------------------------------------------| 

       Am        Em        Fmaj7 





For the rhythm part use these chords and work out the pattern, it's not hard: 
*the B7 is used as a link chord between the A & F* 

E|-----0---------(0)--------0-------(0)--------------------------------------------| 
B|-----1---------(0)--------1-------(0)--------------------------------------------| 
G|-----2----------2---------3--------2---------------------------------------------| 
D|-----2----------1---------2--------1---------------------------------------------| 
A|-----0----------2---------3--------2---------------------------------------------| 
E|-----x----------x---------1--------x---------------------------------------------| 

        Am        B7      Fmaj7      B7 




In the little bridge-y section, these chords are alternated: 

E|------5------------0---------------------------------------------------------| 
B|------6------------1---------------------------------------------------------| 
G|------7------------2---------------------------------------------------------| 
D|------7------------2---------------------------------------------------------| 
A|------x------------0---------------------------------------------------------| 
E|------x------------x---------------------------------------------------------| 

       Dm            Am