- Books are available in paperback editions and as reinforced library bindings--either one is a perfect "grown up" format for preschoolers who have just graduated from board books.- Bright green and blue branding clearly identifies the entire Rookie Preschool line; each level of Rookie books will each carry its own distinctive color pattern- Each Rookie Learn About book focuses on a high-interest preschool topic- Each Rookie Learn About book also includes 1 of 5 essential curriculum themes as a secondary learning topic: self; home/family; neighborhood; wider world; readiness concepts- At the end of each book is a parent note with suggested activites linked to the story and its theme