I’ve heard a lot about Rabbi Gittik – he is very respected in Russian-speaking circles. With his background in mathematics his approach to Torah is very practical – he breaks down PSHAT into DROSH and brings many gems to folks who were raised to think intellectually rather than emotionally.
Rabbi Gittik known for his Academia for Torah learning focused on Russian speaking folks with similar background. The slogan of his school is “If yesterday is like today, so why do we need tomorrow?”.
I was very surprised to learn that Rav Gittik now publicly advertises the works of Baal HaSulam and encourages his students to learn Kabbalah based on Sulam. He even produced a book called Visualization of Kabbalah where he brings down drawings based on Baal HaSulam. The book is in Russian and can be found here: http://mmgitik.com/shop/50/desc/kniga-vizualizacija-kabaly
His website in Russian is: http://mmgitik.com/