I have been a children's book editor for over 20 years. For the first half of that, I worked in-house at Macmillan, Orchard, and Charlesbridge. More recently I have been working independently--working with authors and publishers, speaking at conferences, and giving workshops. I also run The Purple Crayon, an informational website, at http://www.underdown.org/, and am a contributing editor to Children's Writer's and Illustrator's Market.
The Complete Idiot's Guide to Publishing Children's Books grew out of my experiences as an editor. I have posted information and sample chapters on my website at my Idiot's Guide page.