>>>if you want to know about the rebbe, learn his 200+ seforim on all parts of torah,
בבלי, ירושלמי, מדרש,קבלה,חסידות וכו
if you want to know about the rebbe read a sefer like Al Hatorah V’al Hetumrah or Im Nosi yechta . They have have avey nice synopsis of his writing along with “he’oras” .
The Rebbe was a very learned person but he did write anything on the daf and was not known to be a lamdam or an amkan. He did not speak ot people in learning. It was expected in Chabad that you accepted whatever he said. No one asked him kashes on it