Last year, i saw the videos by 3Blue1Brown and inspired by it went on to read some of the standard text books like linear algebra application by Strang. I had seen the Strang videos earlier but somehow did not follow it through. This time however my perspective was changed. I was approaching the subject through the lens of intuition and simplicity. Wherever i found something challenging, i waited for the next day to again re-do it (because i know that this should not be that complex to understand or the understanding is wrong). And to my surprise, again and again, the difficulty was in my rigidness in understanding. The next day , or even later during the day, when my mind was fresh again, i can reason through the concept and get the intuition behind it.

Since then i have seen the Strang videos again and again. Beginning to end. Read the book chapter by chapter and exercises by exercise. And what a delight it had been. And then i jumped upon Joe Blitzstein's probability lectures. What a blast ! Is there a list of teachers like these there, who in the pretext of teaching algebra/probability etc are in reality wiring up our thinking process in ways immaterial to subject they are teaching. Many of us don't want the material to be too casual/layman terms (which hampers self understanding as its no challenging anything within us) and not too rigid (where we cannot break through the challenge).