Remark42 is a commenting engine that can be integrated into blog websites to manage comment sections while maintaining simplicity and control by hosting it on your own server. The guide details the implementation of Remark42 in a Next.js and Tailwind CSS-based blog, focusing on setting up the server and integrating Google authentication for user login. Despite the lack of native support for Next.js, a workaround is provided to incorporate Remark42 into the project. The setup involves creating a Google OAuth2 client for authentication, configuring a Remark42 server on various operating systems, and integrating the comments functionality into the Next.js application. The guide also highlights customization options such as enabling dark mode and a simple view for the comments section. Additionally, it introduces LogRocket, a tool for monitoring and debugging Next.js applications, enhancing visibility into user sessions and providing insights into user interactions.