The Redux Ducks: Restructure your Redux App with Ducks tutorial will teach you how to bundle action creators, action types and reducers side by side in your Redux app. Usually in the beginning of learning Redux you have a technical separation of concerns which gets reflected in the folder structure. Basically there is one folder for your actions and one folder for your reducers. Additionally you collect all action types at one place that they can be reused by reducers and actions.
At the end of this tutorial you can expect to have a running React + Redux app, which consumes the SoundCloud API. You will be able to login with your SoundCloud account, list your latest tracks and listen to them within the browser. Additionally you will learn a lot about tooling with Webpack and Babel.