Complex sentence: She moved to Philadelphia, where she worked as a copywriter at an advertising agency where she began writing articles and fiction for publications including Ladies "Home Journal", "McCall's", "Redbook" and "Seventeen".
Split into simpler sentences: She moved to Philadelphia, where she worked as a copywriter at an advertising agency. She started writing articles and fiction for publications including Ladies "Home Journal", "McCall's", "Redbook" and "Seventeen".