The simplest chord in the Ukulele is C (one finger chord only). And in the key of C i.e chord I, it follows chord IV is F and chord V is G. Remember with the 3-chord we can play many many songs, try Twinkle Twinkle Little Star.

Below is not tablature, just diagrammatic. Ukulele's 4 strings from top to bottom is 4th G, 3rd C, 2nd E and 1st A.

Fret__1st_____2nd______3rd____

A_|________|________|___X____|
E_|________|________|________|
C_|________|________|________|
G_|________|________|________|

Chord C


Fret__1st_____2nd______3rd____

A_|________|________|________|
E_|____X___|________|________|
C_|________|________|________|
G_|________|____X___|________|

Chord F


Fret__1st_____2nd______3rd____

A_|________|___X____|________|
E_|________|________|___X____|
C_|________|___X____|________|
G_|________|________|________|

Chord G