The Celts lived in roundhouses and had a social hierarchy led by kings and druids. They ate foods like porridge, stews, and meats. Family was important, with three generations living together under the father's leadership. Marriage traditions influenced modern practices. Children helped with chores appropriate for their gender. Education of history and religion was taught by druids through song and memory until age 14. They had many gods and celebrated religious festivals like Samhain, the origin of Halloween. Both men and women wore dresses or tunics and engaged in artistic designs.