Learning Next.js with TypeScript is beneficial for several reasons:

Type Safety: TypeScript introduces static typing, which helps catch errors at compile time rather than runtime. This leads to fewer bugs and makes your code more reliable, especially in larger projects.

Enhanced Developer Experience: With TypeScript, you get better tooling support, such as autocompletion and type inference. This makes coding in Next.js smoother and more efficient, improving your overall development experience.

Improved Code Quality: TypeScript encourages developers to write cleaner, more maintainable code. It helps in structuring your application more effectively and makes it easier to read and understand.

Better Collaboration: In a team setting, TypeScript's type definitions serve as documentation, making it easier for team members to understand the codebase and work together more effectively.

Integration with Next.js Features: Next.js has excellent support for TypeScript, allowing you to leverage its features like server-side rendering, static site generation, and API routes with the added benefits of type safety.

Future-Proofing Your Skills: As TypeScript continues to gain popularity in the JavaScript ecosystem, learning it alongside Next.js positions you well for future projects and job opportunities.

Examples

the next example is nextjs without typescript just to get the general idea of learnning nextjs with and without typescript:

// pages/index.js

export default function Home() {
  const items = ["Apple", "Banana", "Cherry"];

  return (
    <div>
      <h1>Fruits</h1>
      <ul>
        {items.map((item) => (
          <li key={item}>{item}</li>
        ))}
      </ul>
    </div>
  );
}

The next code will show you nextjs but with typescript and you'll see the different is not that big and scary:

// pages/index.tsx

import { FC } from "react";

const Home: FC = () => {
  const items: string[] = ["Apple", "Banana", "Cherry"];

  return (
    <div>
      <h1>Fruits</h1>
      <ul>
        {items.map((item) => (
          <li key={item}>{item}</li>
        ))}
      </ul>
    </div>
  );
};

export default Home;

Key Differences
File Extension:

In the JavaScript version, the file is named index.js.
In the TypeScript version, the file is named index.tsx.
Type Annotations:

In the TypeScript version, the items array is explicitly typed as string[], and the functional component Home is typed as FC (Functional Component).
Static Type Checking:

TypeScript provides static type checking, which helps identify type-related errors during development.
Both examples will render the same output, but the TypeScript version offers added benefits in terms of type safety and code maintainability. If you want to learn more about nextjs. try to use online tools like youtube, chatgpt and gpteachus to learn nextjs.

Summary

In summary, learning Next.js with TypeScript enhances code quality, improves collaboration, and provides a more efficient development experience, making it a smart choice for modern web development.