Complex sentence: Starting in 1961, he began to make his career as a divorce and personal injury attorney, but he made his biggest ventures in real estate, which he began when he purchased a 26-unit apartment building in Beverly Hills.
Split into simpler sentences: Starting in 1961, Sterling began to make his career as a divorce and personal injury attorney. His biggest ventures were in real estate, which he began when he purchased a 26-unit apartment building in Beverly Hills.