A fun but long (almost 2 hours!) video where Jenn Creighton and Dan Abramov help out two React developers overwhelmed by divs! A truly deep dive into the React Fiber engine and basically like getting a workshop for free.
A handy walkthrough of 10 ‘practical commandments’ for creating components that you can share widely and that other developers will actually want to use. #6 is controversial, though.
An illustration of a natural, built-in performance optimization that doesn’t require using things like React.memo, PureComponent, or shouldComponentUpdate.