Complex sentence: One obituary notes that a "clever manager" told Tanguay early in her career that money made money, and she never forgot the lesson, buying huge ads at her own expense, and on one occasion allegedly spending twice her salary on publicity.
Split into simpler sentences: One obituary notes that a "clever manager" told Tanguay early in her career that money made money. She never forgot the lesson, buying huge ads at her own expense and, on one occasion, allegedly spending twice her salary on publicity.