Part of the React JourneyNewJourneyLearn Next.js
A free, interactive Next.js course that takes you from React components to a real app: routing, layouts, server and client components, data fetching and server actions. AI hints help when you get stuck, and you get a free certificate when you finish.
47 lessons41 challenges99 quiz questions
- Beginner friendly
AI-assisted coding help
Hands-on interactive lessons
Quizzes to test your knowledge
Free certificate of completion
Syllabus
This section is part of the React Journey. The full syllabus has more sections: click any preview below to view it on the Journey page.
- Section 1Fundamentals42 lessons
Section 2
Next.js Essentials
Start sectionStartGo from React components to a real app: file-system routing, layouts, server and client components, data fetching, server actions, and a complete Next.js project.Why Next.js
4 lessons39Routing & Links
6 lessons516Layouts & Metadata
6 lessons515Server & Client
6 lessons515Data on the Server
6 lessons516Server Actions
5 lessons413Client Navigation
5 lessons515Project: Coddy Eats
9 lessons9
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Promotion zoneEvery way to learn
Read, listen, test yourself, ask the AI, or look up anything you've already covered. Every lesson meets you where you are.
A variable is a named container that stores a value you can reference later in your program.
In Python, you create one by writing the name, an equals sign, then the value you want to store.
The value can change over time. Reassigning the name simply points it to a new value.
Earn a Certificate
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Certificate of CompletionPython Fundamentals
Add to LinkedInWhy learn Next.js with Coddy
- Build Next.js apps in your browser. No Node install, no create-next-app, no config - every lesson hands you a real app directory with layout, pages and components to edit.
- The App Router the way it's used in production: folders as routes, dynamic segments, nested layouts, server vs client components, data fetching, loading and error states, and forms with server actions.
- AI hints that read your actual code. When a route 404s or a server component breaks, you get a nudge that points at the problem without giving the answer away.
- A free certificate when you finish the section - Next.js is the most in-demand React framework, and it's what modern frontend job listings ask for alongside React itself.
Frequently asked questions about learning Next.js
What is Next.js?
Next.js is a React framework for building full web applications. React gives you components; Next.js adds everything around them - file-system routing, nested layouts, server-side rendering, data fetching, and server actions for handling forms and mutations. It's built and maintained by Vercel and is the most widely used React framework in production.
Do I need to know React before learning Next.js?
Yes - Next.js is built on React, so components, props and state should feel familiar first. This section is the second part of the React journey: the Fundamentals section before it covers exactly that groundwork, so you can go straight through in order.
Does the course cover the App Router?
Yes - the section is built around the modern App Router: the app directory, folders as routes, dynamic route segments, nested layouts, and the server/client component model. That's the architecture new Next.js projects use by default and what current job postings expect.
What's the difference between server and client components?
Server components render on the server - they can fetch data directly and ship less JavaScript to the browser. Client components run in the browser and handle interactivity: state, events, effects. Next.js apps mix both, and knowing which to reach for is one of the core skills this section drills.
Can I learn Next.js online for free?
Yes. The interactive Next.js section is free - full lessons, real code challenges with instant feedback, and AI hints. Everything runs in your browser, so you don't need to install Node or scaffold a project to start.
Do I get a certificate after the Next.js course?
Yes. Finishing the section earns you a free certificate of completion you can share on LinkedIn or add to your resume - alongside the complete Next.js project you build in the final chapters.
