Complex sentence: The creative environment helped him discover his artistic focus through photography, by 1965, he graduated from the photographic section of the school with formal training in the fine art of photography and more experience with painting, drawing and creating art installations.
Split into simpler sentences: The creative environment helped him discover his artistic focus through photography. By 1965, he had graduated from the photographic section of the school with formal training in the fine art of photography and with more experience painting, drawing and creating art installations.