Treld Pelkey Bicknell's 'How to Write and Illustrate Children's Books' is really more for illustrators of children's books then the writer's aspect of the book. It's a good source for that particular purpose. If you want a more indepth instruction on the children's book writing process I suggest Barbara Seuling's 'How to Write a Children's Book and Get It Published.' Bicknell's book is valuable for it's comprehensive topics and illustrations. The first part include topics of constructing a story from beginning to end (planning and plotting, story structure, dialogue). There's a section on getting to know your reader and choosing the right words. Plus other informative information like looking into the world of children and the influence of new writing. The second part is devoted to illustration and discusses getting to know your audience, the types of picture books (board, pop-ups, zig-zag, flap, half-flap, holes, pictorial consequences, long text, minimal text, wordless, picture strips). It combines pictures with interpeting a text and using your imagination. Building the porfolio follows in the creation process. The last part is devoted to getting published. Starting from making the book, preparing the roughs, the right style for the right job. The author tops it off with factual writing and researching, Fad & Novelty books and finding the right publisher. To find what's in the market I also suggest the 'Children's Book Writer and Illustrator's Market Book' as a directory in that field to find the right genre of which publisher to contact. This book is a handy source like the other two I mentioned.