Find free ukulele music online at websites such as 8notes.com and GotAUkulele.com. These online sites allow users to look for ukulele music as either sheet music or chord lead sheets.
The website 8notes.com has several categories of free sheet music for ukuleles, such as classical, rock and pop, jazz and traditional; this includes both the notation and the tablature for songs. Clicking on the links for each category leads to a list of available songs.
GotAUkulele.com has a list of many songs that are appropriate for beginners. Clicking on the song name leads to a page with lyrics and chords or tabs for that song.