WIP hooks page tweaks

docs/api/hooks.md

@@ -54,6 +54,8 @@ Allows you to extract data from the Redux store state, using a selector function
 
 The selector function should be [pure](https://en.wikipedia.org/wiki/Pure_function) since it is potentially executed multiple times and at arbitrary points in time.
 
+See [Using Redux: Deriving Data with Selectors](https://redux.js.org/usage/deriving-data-selectors) in the Redux docs for more details on writing and using selector functions.
+
 :::
 
 The selector is approximately equivalent to the [`mapStateToProps` argument to `connect`](../using-react-redux/connect-extracting-data-with-mapStateToProps.md) conceptually. The selector will be called with the entire Redux store state as its only argument. The selector will be run whenever the function component renders (unless its reference hasn't changed since a previous render of the component so that a cached result can be returned by the hook without re-running the selector). `useSelector()` will also subscribe to the Redux store, and run your selector whenever an action is dispatched.