To play this it is a simple down/up/down/up then change Except when it comes to Dm–
C strum down once on each then change. This is just the first two verses. Hope 
this all makes sense. 

Chords: Am 
        F
        C
        G
        Dm

   Am      F          C      G
Of all the money that e'er I had
     Am       F       C     G
I've spent it in good company
    Am      F         C         G
And all the harm that e'er I've done
 Am      F     Dm       Am   
Alas it was to none but me
    C        F        C       G
And all I've done for want of wit
   Dm   C  G      Am     G    
To mem–‘ry now I can't recall
   Am      F      C       G
So fill to me the parting glass
     Am        F      Dm       Am
Good night and joy be with you all


   Am      F             C      G
Of all the comrades that e'er I had
         Am    F      C     G
They are sorry for my going away
    Am      F                C      G
And all the sweethearts that e'er I had
           Am      F        Dm      Am
They would wish me one more day to stay
    C        F     C       G
But since it falls unto my lot
     Dm C     G        Am         G
That I should rise and you should not
      Am     F       C      G   
I'll gently rise and softly call
     Am        F      Dm       Am
Good night and joy be with you all