http://www.ezfolk.com/uke/Tutorials/Fingerpicking/fingerpicking.html
There are relatively people talking about that, so it's one of the few interesting resources.
It's obvious that some songs were better played this way than strumming.
Another slower step by step tutorial:
http://www.ukeschool.com/ukulele/lessons/finger101.html
A youtube tutorial, to most manageable one and sound nice: