A colleague at work (the day job) sparked this topic yesterday when she brought me two versions of a picture book she'd been working on for quite some time. She wanted advice, and I gave her some brief pointers but didn't give her nearly the amount of stuff she deserved because--simply--I don't know much about children's publishing.
I told her I'd bring her some reading, and here are a few of the resources I've found. More to come in the future, I'm sure:
Write For Kids.com website
Children's Writing section at Writer's Digest
Colossal Directory of Children's Publishers
I think that's enough...for now :)
Happy writing for kids!
Beth