How to read tablature?
Riff:            
xA|---------------7-4-----|
xE|--5~-------------------|
xC|-----------------------|
xG|-------2h4p2------4p2--|

Chorus:
G
Dont worry about a thing,
      C                               G
cause every little thing gonna be all right.
G
dont worry about a thing,
      C                               G
cause every little thing gonna be all right!

Verse:
             G
Rise up this mornin,
                D
Smiled with the risin sun,
             C
Three little birds
            G
Pitch by my doorstep
             D
Singin sweet songs
            C
Of melodies pure and true,
        C
Sayin, - this is my message to you-ou-ou -

Chorus:
     G
dont worry bout a thing,
      C                               G
cause every little thing gonna be all right.
        G
Singin: dont worry - dont worry - bout a thing,
      C
cause every little thing gonna be all right!

Verse:
             G
Rise up this mornin,
                D
Smiled with the risin sun,
             C
Three little birds
            G
Pitch by my doorstep
             D
Singin sweet songs
            C
Of melodies pure and true,
        C
Sayin, - this is my message to you-ou-ou -

Chorus - repeat -:
G
dont worry about a thing, worry about a thing, oh!
C                               G
Every little thing gonna be all right. dont worry!
        G
Singin: dont worry about a thing - I wont worry!
      C
cause every little thing gonna be all right.

Outro: 
xA|---7-7-7--9-7----------|
xE|---------------4-5--5~-|
xC|-----------------------|
xG|-----------------------|