What is Next.js?
Next.js is a React framework that gives you the structure and tools to build production-ready applications. Routing, bundling, and optimizations come out of the box.
Because pages can be rendered on the server, the initial paint is fast and SEO-friendly without extra configuration.
File-based routing
Next.js maps files and folders directly to routes. Drop a page.tsx into the app directory and it becomes a URL. Dynamic segments let you build pages that adapt to real data.
The convention is small but powerful: nested folders create nested routes, and layout files wrap entire sections with shared UI.
Rendering strategies
Each page can decide when to render. Static generation runs at build time, server rendering runs per request, and client components add interactivity where it matters.
Pick the strategy that matches your data: static for content that changes rarely, server for personalized responses, client for interactive components.
Wrap up
The best way to learn Next.js is to build with it. The conventions force good defaults and let you focus on the product.
Start small, read the docs when you get stuck, and ship something.