Ellen Jackson has a great website all about her work as a children’s book author. I think the best parts of her site are about rejection letters she has received and how to deal with rejection as an author.

Picture-Book
This site is filled with information for children’s illustrators, authors and publishers. It has information on conferences, awards, galleries, groups, techniques, booksellers, recommended books, lists and more. Lots of stuff to look through for book lovers too.