Gate 3, Chapter 1:  HaMakom, G-d Is the Place of the World

Gate 3, Chapter 2:  The World Endures By the Will of Hashem

Gate 3, Chapter 3:  A Word of Caution

Gate 3, Chapter 4:  Hashem Fills and Surrounds All Worlds

Gate 3, Chapter 5:  Hashem Is the Soul of the World

Gate 3, Chapter 6:  Do Not Delve Into Hidden Things