Linear algebra, calculus and neural networks taught through animation, aimed at building intuition before notation.

3Blue1Brown - Mathematics, Visually

Working mathematicians talking through problems, proofs and oddities on brown paper, one idea per video.

Numberphile - Conversations About Numbers

Complete recorded lecture series in computer science, physics and mathematics, matched to the published course notes.

Free preprint archive for physics, mathematics, computer science, quantitative biology and statistics, updated every weekday.