3 years & up. Help children explore what they want to be when they grow up with this descriptive Let's Learn About Community Helpers Career Exploration Books. This set of nine books follow the careers of librarians, bus drivers, dentists, construction workers, chefs, plumbers, farmers, mechanics, and mail carriers. Children will love exploring different career paths and learning about the importance of each job. Encourage children to ask questions or talk about the people they know in these positions. Set of 9 paperback books.