This course is a beginner's gateway into the mechanics of using Redux as an application building platform. It takes a bottom-up approach, enforcing the basic aspects of Redux before incorporating them together in a creative and interactive way. It begins with a short theoretical section before moving on to application based problems. 
The course does assume that the user has a basic idea of how React works, as Redux works in the React environment. Let's dive in!

Understanding Redux: A Beginner's Guide To State Management

We're nearing the end of our task. Hang in there!

In this section, we will figure out how to update the message state to allow messages to appear in the chat window when they are submitted.

Here’s a list of all the reducers we’ve got at this point:

- activeUserId.js
- contacts.js
- messages.js
- typing.js
- user.js

Which of these do you think should be concerned with updating the messages in a user conversation?

Yes, the messages reducer.

Here’s the current content of the messages reducer:

The SEND_MESSAGE action will now be handled in the messages reducer. This will be a simple challenge for now.

Getting to know Redux (Theory)

Your First Redux Application

Understanding State Updates with Actions

Building Skypey: A More Advanced Example

Building Skypey: Designing the State Object

Building Skypey: The User Component

Building Skypey: The Empty Screen

Building Skypey: The Chat Window

Building Skypey: Header and Chat Window

Building Skypey: Messaging

The Skypey App

Updating the Message State