React Redux is a predictable state container for JavaScript apps, often used in conjunction with the React library to build user interfaces. Coursera's React Redux catalogue teaches you how to manage application state with Redux, integrate Redux with React, and develop complex applications using these powerful libraries. You'll learn concepts like pure functions, actions, reducers, and the Redux store, as well as best practices for structuring and testing your Redux code. Moreover, you'll gain experience in creating dynamic and scalable web applications using React and Redux, mastering skills that are essential for modern front-end developers.