This is a lecture by Prof. Rachel Elior of Hebrew University. If you are interested in Kabballah, Hassidism, Zohar, and the development of esoteric spirituality in Judaism, you will find this lecture very insightful. Dr. Elior is an expert in this area. However, a disclaimer needs to follow: Dr. Elior is a scholar, not a mystic herself, so her approach is from an academic perspective. You might enjoy this video if you love listening to academic lectures. The language can get quite technical.

If you are interested, you can check out her book "Mystical Origins of Hasidism" on Amazon.