There is a huge variety of Kabbalah texts, written in different periods. Which are the most effective texts to study nowadays?
Thousands of genuine texts have been written since Kabbalah’s first appearance. In each period, Kabbalists composed texts, adapted to the degree of spiritual evolution of their contemporaries. Raziel HaMalaach (The Angel Raziel), written by Adam ha Rishon (Adam), Sefer Yetzira (The Book of Creation), written by Abraham, the Torah (Pentateuch), by Moses, and Rabbi Shimon Bar-Yochai’s The Book of Zohar, all hold within them the secret to the universe and the method to correct the ego. All these books can bring one to know the Upper Force and achieve wholeness and bliss.
But as we’ve said, all the Kabbalists wrote in a way that suited their time. Hence, the most effective Kabbalists for our spiritual growth and corrections are the writings of Rabbi Yehuda Ashlag, a.k.a. Baal HaSulam, as well as the writings of Baruch Ashlag (The Rabash), both of whom lived and worked in the twentieth century. The bulk of Baal HaSulam’s work focuses on interpreting the words of the Ari and the writings of Rabbi Shimon Bar-Yochai, adapting them to the spiritual state of the souls in our generation.
Other suitable books for study in our generation are the writings of Rav Kook, the Vilna Gaon (GRA), Ramchal, and the writings of the Ari. We can understand these writings in depth to the extent that we acquire the basics of the wisdom of Kabbalah through the works of Baal HaSulam and the Rabash.