Tbh, I think the tutorial on React’s site itself is pretty good at making an introduction to the framework and the React way of thinking. It’s the one here: https://reactjs.org/tutorial/tutorial.html

As for changes during its lifetime, I would say that it is fairly on par for most web-focused frameworks, both front and backend. You could look at how ASP.NET has changed over the last few versions for example and see it being similar to React’s changes. The largest changes in React recently have been a greater focus on moving from syntactic sugar JS classes to pure functions, and React Hooks that go along with that. There’s definitely a shiny things syndrome you get if you just google for React tutorials, which is a bit annoying, but the official docs are pretty solid, and a few of the core devs are great to follow from a philosophical standpoint (like @dan_abramov).

Hope that helps!