I think Adrian Bogden has some pretty great content if you already understand React and he gets into some advanced concepts within hooks which React has shifted to over classes. https://www.youtube.com/@bogdanadrian9725/videos

React docs: Should I use Hooks, classes, or a mix of both? When you’re ready, we’d encourage you to start trying Hooks in new components you write. https://legacy.reactjs.org/docs/hooks-faq.html#should-i-use-...