Family Sharing is a great way to share apps, music, books, and other content with your family members. However, it's important to note that Family Sharing is limited to those who are age 13 or older. This is because Apple wants to ensure that all content shared through Family Sharing is appropriate for all members of the family. If you're not yet 13, you'll need to wait until you reach that age before you can join or create a Family Sharing group.