Everything about React events (with live exercises)
reactarmory.com
reactarmory.com
Many guides which say something about how prop resolving works say something abiut how it is similar to writing HTML, but with a few extra gotchas ("HTML attributes can’t be functions?! Since React Elements are plain old JavaScript objects, you can add anything to an element ..."), while it is actually a unifying wrapper around the HTMLDOM browser APIs (when using ReactDOM, of course). Saying that ReactDOM is extended from HTML leads to confused developers expecting react to handle props of certain types in a consistent way over props, which it doesn't [0].
So, if possible, could you update this guide to help prevent these misconceptions? Other than that, this looks like a great guide for starting react developers!
For anyone looking for more info past that, you may be interested in my React/Redux links list at https://github.com/markerikson/react-redux-links .