This is a truly wonderful video by 3blue1brown that motivates a beautifully presented introduction to conformal maps by way of Escher’s “Print Gallery”: https://youtu.be/ldxFjLJ3rVY
I studied complex in my honours year in pure maths and it took me weeks of study to build up the kind of intuition for complex maps that Grant lays out in 45 minutes with gorgeously crafted visuals and animations. So inspiring.

