Complex sentence: Anderson trained as a painter at the Slade School of Fine Art in London, where he won the John Ruskin Award for painting, before moving to the Rijksakademie van beeldende kunsten in Amsterdam where he first began experimenting with film.
Split into simpler sentences: Anderson trained as a painter at the Slade School of Fine Art in London, where he won the John Ruskin Award for painting. He then moved to the Rijksakademie van beeldende kunsten in Amsterdam, where he first began experimenting with film.