Wes Bos' Advanced React with GraphQL is a really nice way to touch upon a number of these areas in one go: you get Next.js, Prisma and Apollo, styled components, a bit of discussion and uses of reusable components (although knowledge along those lines assumed), and as the app is built, there's a lot to explore on the latency and rendering side of things. Even for a React dev, there'll be something new to try.
I learned to code in 2016-17 and was already starting to feel out of date - the course made me feel more confident in JS/React, but also more aware of the issues themselves rather than simply working in the stack I was employed in without question.
It's certainly made me want to delve more into moving away from Redux/Flux-style state management and the speed and simplicity offered by Next.js.
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