The blog provides a step-by-step guide to creating a simple real-time chat application using Go and PubNub, which supports multiple clients and allows instant message exchange while indicating user online or offline status. It instructs users to clone a sample application from GitHub and obtain PubNub keys to enable real-time messaging and presence events. Users are guided to set up the application by editing constants in the main.go file to define their PubNub keys, and are shown how to test the chat function between two terminals with different usernames. The application utilizes PubNub features such as Publish/Subscribe for core messaging, Presence for tracking user activity, and real-time events for managing incoming messages and updates. A code walkthrough explains the initialization of PubNub, handling different event types, and executing the main chat loop to send messages. For troubleshooting or further questions, users are encouraged to contact PubNub's developer relations team.