Start by breaking your state into small, manageable parts. Actions are payloads of information that send data from your application to your Redux store. For example:

const setUser = (user) => ({
 type: 'SET_USER',
 payload: user,
});

Your reducer handles the changes to the state based on the action type:

const userReducer = (state = {}, action) => {
 switch (action.type) {
   case 'SET_USER':
     return { ...state, user: action.payload };
   default:
     return state;
 }
};

Make sure to structure your state in a way that’s scalable and modular. Use combineReducers to combine smaller reducers into a root reducer and leverage useDispatch and useSelector from react-redux in your components.