What learning resources have you encountered that are so exceptional they deserve to be considered classics? Books, courses, websites, videos, tools - anything that delivers extraordinary clarity, insight, or effectiveness, regardless of subject matter.
No domain restrictions - programming, arts, sciences, trades, humanities, or obscure niche topics. What resource fundamentally transformed your understanding or skills?
I'll add some of my own:<p>- the fast.ai courses by Jeremy Howard. www.fast.ai<p>- /u/spez did a course on python about 15 years ago and its one of the best intros to programming ive ever seen. its on udacity.<p>- nand2tetris for understanding how computers work