Maybe you are looking for "React: Up & Running: Building Web Applications" 2nd Edition? Physical book published by O'reilly on December 2021. Author is Stoyan Stefanov, a facebook engineer (ex fb I think?). Has good reviews. It's also only 230 pages.
https://www.amazon.com/React-Running-Building-Web-Applicatio...
Hooks (functions?) are the way forward for React. Classes were the old way. But this book has both. Author's rationale is "A controversial decision was the inclusion of class components in addition to function components. Function components are likely the way forward; however, the reader is likely to encounter existing code and tutorials that talk only about class components. Knowing both syntaxes doubles the chances of reading and understanding code in the wild". Seems reasonable.
Hooks (functions?) are the way forward for React. Classes were the old way. But this book has both. Author's rationale is "A controversial decision was the inclusion of class components in addition to function components. Function components are likely the way forward; however, the reader is likely to encounter existing code and tutorials that talk only about class components. Knowing both syntaxes doubles the chances of reading and understanding code in the wild". Seems reasonable.
Also definitely take a look at the React Docs Beta at https://beta.reactjs.org/
They seem to be a substantial improvement over the previous docs. All explanations are written using Hooks rather than classes.
I love this 10 min intro video to React Docs Beta by Rachel Nabors from React Conf 2021. Has subtitles. > https://www.youtube.com/watch?v=mneDaMYOKP8
Some comments have said React might be a way to hell, so if you wanna improve your JavaScript or CSS, there are 2 well-regarded paid courses:
Just JavaScript by Dan Abramov. He's a member of the React team, and a co-author of Redux and Create React App. https://justjavascript.com/
CSS course by Josh Comeau. https://css-for-js.dev/
Both are paid courses.