Next.js 15 gives you a fast starting point for production apps. In this guide, we will cover the core workflow for building and shipping a modern app, plus a few practical habits that help teams move quickly.

If you want release notes and migration details, start with the official Next.js blog.

Build Your First Next.js 15 Page

A good first step is setting up your root layout and font loading so every page inherits consistent typography and HTML metadata defaults.

import { Inter } from 'next/font/google'

const inter = Inter({
  subsets: ['latin'],
  display: 'swap',
})

export default function RootLayout({
  children,
}: {
  children: React.ReactNode
}) {
  return (
    <html lang="en" className={inter.className}>
      <body>{children}</body>
    </html>
  )
}

What to Learn First

1. Routing with the App Router (layouts, nested routes, and loading states).

2. Server Components vs Client Components and when to use each.

3. Data fetching patterns and caching behavior in production.

Starter Project Checklist

• Create a landing page and a protected dashboard route.

• Add authentication before building advanced features.

• Measure performance early so regressions are visible.

• Scaffold the app and verify local development runs.

• Add a database-backed feature (posts, comments, or billing records).

• Deploy to an edge runtime and test real production behavior.

Avoid the temptation to optimize everything on day one. Ship a small vertical slice, then improve with real usage data.

Left aligned note: keep server logic close to the route that owns it.

Center aligned takeaway: start simple, measure, then scale.

Right aligned reminder: production is the real benchmark.

Performance often feels nonlinear: a ²x improvement in a bottleneck can unlock much larger UX gains.

Think in layers: cache at the edge, stream what you can, and keep the _critical path small.