When building a blog with Next.js, using a headless CMS like Prismic is recommended over managing content manually through code, as it simplifies content management for both technical and non-technical team members. The tutorial guides users through setting up a Prismic project and configuring it with Next.js, including steps for project setup, Tailwind CSS configuration, and using Prismic's Slice Machine for dynamic content management. It also covers creating and customizing page types, such as "Blog Post" and "Page," and setting up navigation and components like "Hero" and "PostCard" to enhance the blog's functionality and aesthetics. By updating the homepage and individual blog post pages, users can ensure a seamless content display and navigation experience. The comprehensive guide emphasizes the ease of building and maintaining a blog through Prismic's user-friendly interface, ultimately enabling users to deliver consistent and unique content efficiently.