Complex sentence: He only received elementary education at Chatsworth School, Liverpool but he had great talent and when he was 22 years of age he came to work at the office of the Foreign Mission in Falkner Street, near the Philharmonic Hall.
Split into simpler sentences: He only received elementary education at Chatsworth School, Liverpool but he had great talent. And when he was 22 years of age he came to work at the office of the Foreign Mission in Falkner Street, near the Philharmonic Hall.