Complex sentence: Admitted to Christ's College, Cambridge, he graduated BA in 1632 and became a fellow of St John's College in 1634, where he became a college tutor and lecturer on rhetoric, and was much sought after.
Split into simpler sentences: Admitted to Christ's College, Cambridge, he graduated BA in 1632 and became a fellow of St John's College in 1634. At St John's Cleveland became college tutor and lecturer on rhetoric, and was much sought after.