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Next.js

Beginner to Advanced

App Router · Server Component · Server Actions · Streaming · Optimistic UI · Middleware · SEO · Revalidation

15Lessons·5Chapters
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BasicsRenderingRoutingAPISEO
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01 Basics
3 lessons
App Router Basics — Differences from Pages RouterContinue
40 minRead
Client vs Server Boundary
35 minRead
File Conventions — loading / error / not-found
30 minRead
02 Rendering
5 lessons
Server Component — Direct DB Access, 0KB Bundle
40 minRead
Data Fetching — 4 fetch Cache Policies
35 minRead
Server Actions — Mutation Without API Routes
40 minRead
Streaming + Suspense — Progressive HTML Streaming
35 minRead
Optimistic UI — useActionState + useOptimistic
35 minRead
03 Routing
3 lessons
Dynamic Routing — [slug] · [...slug] · generateStaticParams
35 minRead
Layout vs Template — State Persistence vs Remounting
25 minRead
Middleware — Authentication·Redirect·Headers
30 minRead
04 API
2 lessons
Route Handlers — app/api/.../route.ts
30 minRead
next/headers — cookies / headers / redirect
25 minRead
05 SEO
2 lessons
Metadata API — generateMetadata + OG/Twitter
30 minRead
Revalidation Strategy — revalidatePath / revalidateTag
30 minRead

Next.js Learning FAQ

Can I learn Next.js for free?

Yes. All CodeMaster Next.js lessons are completely free, with no ads. Sign up to access the full content.

Can beginners follow the Next.js course?

Yes. Every lesson follows concept → code example → interactive demo → quiz, so you can follow along with no prior knowledge.

How long does it take to learn Next.js?

Each lesson is about 30-60 minutes on average. At 1-2 lessons a day, you can finish the whole category in about 1-2 months.

Can the AI mock interview be based on Next.js too?

Yes. CodeMaster's 4-turn AI mock interview covers algorithms, system design, CS knowledge, and vector DBs, and gives feedback on real interview questions including Next.js.

Free Next.js course — 15 lessons | CodeMaster