Hey, this is the way my church (Christ Lutheran) Plays this awesome worship song 
It's very simple for beginners to play

(Verse 1)
D            A                Em                 D       A           G
Light of the world you stepped out into darkness open my eyes let me see
D           A         Em              D          A             G
Beauty that made this heart adore you hope of a life spent with you

(Chorus)
G            D                    A                     D              G
Here I am to worship Here I am to bow down Here I am to say that your my God 
G                  D                A                  D           G
You're altogether lovely altogether worthy altogether wonderful to me


(Verse 2) 
D           A        Em              D           A       G    D         A
King of all days o so highly exalted Glorious in Heaven above Humbly you came 
       Em                D            A          G
to the earth you created all for love sake became poor


Repeat Chorus X 2

(Bridge)
A          D             G         A      D         G
I'll never know how much it costs to see my sin upon that cross
I'll never know how much it costs to see my sin upon that cross

Repeat chorus until the end
Hope it helped out