Next.js for Builders
Next.js is the framework behind RadarTrek, most modern SaaS products, and hundreds of thousands of production sites. It adds file-based routing, server-side rendering, API routes, and one-click Vercel deployment on top of React. This course teaches Next.js through building a real product — you leave with a deployed, full-stack web app.
What you'll learn
Course outline
Free — no account needed
What Is Next.js?
React is a library. Next.js is the framework that makes it production-ready.
File-Based Routing
How the app/ directory structure maps to your site's URL structure
Server vs Client Components
The most important Next.js concept — what runs on the server, what runs in the browser
Full course — $69 one-time
Data Fetching in Next.js
Server-side fetch, caching, revalidation, and when to use each pattern
API Routes
Build your backend in the same project — route handlers for GET, POST, and webhooks
Metadata and SEO
Static and dynamic metadata, Open Graph, JSON-LD, and canonical URLs
Forms and Server Actions
Handle form submissions with Server Actions — no API route needed
Authentication with NextAuth / Clerk
Add login, sessions, and protected routes — the two main approaches
Images, Fonts, and Performance
next/image, next/font, and Core Web Vitals best practices
Deploying to Vercel
From git push to live URL — environment variables, preview deployments, and production checklist
Get the full course
10 lessons — from React to a deployed, full-stack Next.js app with auth, API routes, and Vercel production deployment.
Written by the RadarTrek editorial team · Reviewed June 2026
About this course
Next.js is the most popular React framework for building production web applications, combining server-side rendering, static generation, file-based routing, and API routes in one cohesive package. Learning Next.js means you can build fast, SEO-friendly web applications without the complexity of configuring each piece separately. This Next.js tutorial covers the App Router paradigm, Server Components, server actions, and deployment to Vercel — the stack that most modern full-stack JavaScript teams use in 2026.
Next.js is the framework of choice for SaaS products, marketing sites, e-commerce stores, and content platforms that need both performance and developer experience. Companies from small startups to large enterprises use Next.js in production. After this course you will be able to build and deploy a complete full-stack Next.js application with dynamic routes, server-side data fetching, form handling, authentication integration, and production deployment — in a single weekend.
Frequently asked questions
Do I need to know React before learning Next.js?
Yes — Next.js is built on React, so React fundamentals are a prerequisite. You should understand components, props, state, hooks (useState, useEffect), and JSX before starting. Next.js adds the full-stack layer — routing, server-side rendering, API routes, database access — but the UI layer is still React. Complete the React Fundamentals course first if you are not yet comfortable with React.
What is the difference between the Pages Router and App Router in Next.js?
The Pages Router was Next.js's original architecture using a pages/ directory. The App Router, introduced in Next.js 13, uses an app/ directory with React Server Components, layouts, loading states, and error boundaries. This course focuses on the App Router, which is the current recommended approach for new projects. The App Router offers better performance and a cleaner mental model for data fetching.
What can I build with Next.js?
Next.js is used to build SaaS applications, marketing and landing pages, e-commerce stores, dashboards, CMS, documentation sites, and any web application that needs both good performance and a rich interactive UI. Because it handles both front-end and back-end (via API routes or Server Actions), a single Next.js application can replace what used to require separate front-end and back-end codebases.
Is Next.js worth learning over plain React in 2026?
For any production application, Next.js is the better choice over plain Create React App or Vite-based React. Next.js solves the problems that raw React leaves open: routing, server-side rendering for SEO, image optimisation, code splitting, and API layer integration. The React team itself recommends using a framework like Next.js for most new projects rather than starting with raw React.
How do I deploy a Next.js application?
Vercel offers the smoothest deployment experience — connect your GitHub repository and deployments happen automatically on every push. The free tier is generous enough for side projects and small applications. Alternatively, Next.js can be deployed to any Node.js hosting platform, Docker containers on cloud providers, or as a static export to any CDN. This course walks through Vercel deployment so you have a live URL by the end.