@profoundlynerdy same, at the age of 13 QBASIC on MS DOS 6.22. (I was born in 1983). And actually before that a 2-week after school course of SuperLogo on Windows 3.11.
Nowadays, I’d say #p5js https://p5js.org/ and #thecodingtrain https://thecodingtrain.com/
@shiffman