I'm also approaching 40 and dusted of some old books from uni last year. One of which was about linear algebra, it was incredibly dense and proof heavy and I re

I'm also approaching 40 and dusted of some old books from uni last year. One of which was about linear algebra, it was incredibly dense and proof heavy and I remember not understanding what I was doing, mostly remembering formulas. Then I watched 3Blue1Brown video series on linear algebra and things just clicked, almost 20 years after that first algebra class :) https://www.3blue1brown.com/topics/linear-algebra https://www.3blue1brown.com/topics/linear-algebra