Strapi is a flexible, open-source headless CMS that enables developers to choose their favorite tools and frameworks, allowing editors to manage and distribute content easily. It provides an admin panel to edit and create APIs, easily-editable code using JavaScript, and supports plugins for customization. To install Strapi, users can run the command `npx create-strapi-app my-project` or `yarn create strapi-app my-project`. Once installed, users can access the development server at `https://localhost:1337/admin`. Strapi provides a great package to query its backend API, and @nuxtjs/strapi makes it easier. Users can use Nuxt.js with SSR mode and server hosting, along with Tailwind CSS as their preferred CSS framework. The @nuxtjs/strapi module is used to find all articles, display them on the page, and check if a user is logged in before allowing access to certain routes. Strapi also provides a plugin system for extensibility and customization. Users can create an authenticated middleware to restrict access to certain routes based on user authentication status. The tutorial covers building a blog app with Strapi and Nuxt.js, including creating a login and signup page, articles page, article content page, and create article page. It also includes manual population of the `users_permissions_user` field and file upload logic. With this tutorial, users have what it takes to tackle Strapi authentication with NuxtJs in their arsenal.