Use the child's attention span and reading stage rather than age alone. Board books should withstand repeated handling, picture books work well for shared reading, and chapter books need a comfortable text size and manageable chapter length. Sample pages help you judge the balance of story, explanation, and illustration.

Look for faithful, age-appropriate treatment of miracles, martyrdom, and difficult history. A good book invites questions without creating unnecessary fear. For a nameday or baptism gift, a story connected to the child's patron saint can be especially meaningful. Activity pages, pronunciation help, and feast-day notes add value for family or classroom use.