For all your marketing ideas, I recommend the Christian Writer’s Market Guide. This can be purchased on www.Amazon.com/. This book lists over 1,200 Christian markets. Study the markets for children and then go on the various websites of the publishing houses to see their latest books and their guidelines.
Also, another way to learn what is selling in the children’s market is to go to your local Christian store and look at the books. Ask the owner or manager what books sell the best. This will help you to become familiar with your market. Also, you can obtain copies of children’s magazines and church school take-home papers by sending an e-mail, asking for their writers guidelines and a sample copy. For take-home papers ask for their theme list. However you should check their websites first to see how much of this information is listed there.