Complex sentence: Sena continued working as a newspaper peddler to save money, he also entered Arellano again to take up a vocational certificate course in Painting and later graduated as class valedictorian in 1966.
Split into simpler sentences: Sena continued working as a newspaper peddler to save money. He returned to Arellano to take up a vocational certificate course in painting and later graduated as class valedictorian in 1966.