Complex sentence: He was first educated at home, and then studied in the Visim school for workers' children, then later at the Yekaterinburg Theological Seminary (1866-1868) and at the Perm Theological Seminary (until 1872).
Split into simpler sentences: He was first educated at home, and then studied in the Visim school for worker's children. He later attended the Yekaterinburg Theological Seminary (1866-1868) and the Perm Theological Seminary (until 1872).