Here are some ukulele songs sites and other resources you might find helpful:
Richard G’s Ukulele Songbook
Jim Carey’s Ukulele Songbook
OzBcoz (Jim Carey’s individual song page with cool transpose feature)
Capotasto Music Ukulele Tablature (easy to intermediate)
Online Ukulele Tuner
Video lessons and instruction
My friend Cynthia K’s “Tiny Tips”, great for beginners!
James Hill’s “The Ukulele Way”, a comprehensive course from the ukulele master
with lots of free lessons and unlimited access for a small monthly fee
Ukulele Go! Full of Great Tips, Tricks, and Lessons
Ukefarm: Ukulele Radio Station, Songs, Apps, and more!
Find Ukulele Chords that Sound Good Together (from Ukulele Go!)