This series of books contains the works of the ARI, the foundation for the study of the Kabbalah, accompanied by the commentary of the Baal Hasulam. Questions and answers, explanations, and a guide to achieving the Upper Worlds are contained within this scientific text.This is a preliminary translation covering the foundational sections of Talmud Eser Sefirot and Baal Hasulam's commentary. Selected sections have been translated in this edition; more will be translated in the near future and will be published in a complete edition.