Complex sentence: In preparation for Gauguin's visit, Van Gogh bought two beds on advice from his friend the station's postal supervisor Joseph Roulin, whose portrait he painted, and on 17 September spent the first night in the still sparsely furnished Yellow House.
Split into simpler sentences: In preparation for Gauguin's visit, Van Gogh bought two beds on advice from his friend, the station's postal supervisor Joseph Roulin, whose portrait he painted. On 17 September he spent the first night in the still sparsely furnished Yellow House.