Regarding your question about Chabad.org, you may read biographies, stories, and encounters. Chassidic topics about the greatness and unity of G-d and explanations on the Torah portions, mainly on the five books of Moses are permitted as they are included in Bible studies. As a principle, Kabbalah studies in their source such as Zohar are prohibited for Noahides. But on this website, the explanation is in Hassidic words and terms so you may read about the 288 sparks for the purpose of understanding Rabbi Perets lecture.
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