After you wrapped your app into provider you can use connect
function to subscribe your component to store changes and provide mapping between Redux state properties and React components' properties:
import { connect } from 'react-redux';
const MyComponent = ({data}) => (
<div>{data}</div>
);
const mapStateToProps = (state, ownProps) => ({
data: state.myComponentData
});
connect(mapStateToProps)(MyComponent);