Complex sentence: His first contact with The Living Theatre was in 1968, when, as a student at Yale University, attended a performance in New York's Lower East Side, joining the company in 1977.
Split into simpler sentences: His first contact with The Living Theatre was in 1968, when, as a student at Yale University, attended a performance in New York's Lower East Side. He first became aware of The Living Theatre while a student at Yale University in 1968, joining the company in 1977.