Complex sentence: In 1976 he began study with western herbalist William LeSassier who developed the theory of Triune formulas and he also took university courses in anatomy and physiology, pharmacognosy, and cellular biology.
Split into simpler sentences: In 1976 he began study with the Western herbalist William LeSassier, who developed the theory of Triune formulas. Winston took university courses in anatomy and physiology, pharmacognosy, and cellular biology.