Calculus (Khan Academy)

Sal Khan's calculus playlist from Khan Academy, made of short focused videos. It starts with Newton, Leibniz and the idea of a derivative, then works through introduction to limits and many limit examples, continuity, derivatives and differentiation rules, and moves on to applications and integrals. Each video tackles one idea or example, so it is easy to watch exactly the topic you are stuck on. It suits FSc students and anyone who wants bite-sized calculus practice; pair it with Professor Leonard's full lectures for depth.