More helpful README (#14830)

* More helpful README

Updated to include more details about Next.js, link to the interactive tutorial, showcase, etc. Content mostly based on the official Next.js site.

* create-next-app readme

An updated readme with more details on options, benefits, etc.

* Apply edits from code review

Co-authored-by: Luis Alvarez D. <luis@vercel.com>

* Remove redundant intro

* Update packages/create-next-app/README.md

* Remove introduction and list in showcase

* Apply suggestions from code review

* Update packages/next/README.md

Co-authored-by: Luis Alvarez D. <luis@vercel.com>
Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

packages/create-next-app/README.md

@@ -1,8 +1,30 @@
-# create-next-app
+# Create Next App
 
-This package includes the global command for creating [Next.js](https://github.com/vercel/next.js) applications.
+The easiest way to get started with Next.js is by using `create-next-app`. This simple CLI tool enables you to quickly start building a new Next.js application, with everything set up for you. You can create a new app using the default Next.js template, or by using one of the [official Next.js examples](https://github.com/vercel/next.js/tree/canary/examples). To get started, use the following command:
 
-Please refer to its documentation:
+```bash
+npx create-next-app
+```
 
-- [Setup](https://nextjs.org/docs/getting-started#setup) – How to create a new Next.js application.
-- [Documentation](https://nextjs.org/docs) – How to develop Next.js applications.
+To create a new app in a specific folder, you can send a name as an argument. For example, the following command will create a new Next.js app called `blog-app` in a folder with the same name:
+
+```bash
+npx create-next-app blog-app
+```
+
+## Options
+
+`create-next-app` comes with the following options:
+
+* **-e, --example [name]|[github-url]** - An example to bootstrap the app with. You can use an example name from the [Next.js repo](https://github.com/vercel/next.js/tree/master/examples) or a GitHub URL. The URL can use any branch and/or subdirectory.
+* **--example-path <path-to-example>** - In a rare case, your GitHub URL might contain a branch name with a slash (e.g. bug/fix-1) and the path to the example (e.g. foo/bar). In this case, you must specify the path to the example separately: `--example-path foo/bar`
+
+## Why use Create Next App?
+
+`create-next-app` allows you to create a new Next.js app within seconds. It is officially maintained by the creators of Next.js, and includes a number of benefits:
+
+* **Interactive Experience**: Running `npx create-next-app` (with no arguments) launches an interactive experience that guides you through setting up a project.
+* **Zero Dependencies**: Initializing a project is as quick as one second. Create Next App has zero dependencies. 
+* **Offline Support**: Create Next App will automatically detect if you're offline and bootstrap your project using your local package cache.
+* **Support for Examples**: Create Next App can bootstrap your application using an example from the Next.js examples collection (e.g. `npx create-next-app --example api-routes`).
+* **Tested**: The package is part of the Next.js monorepo and tested using the same integration test suite as Next.js itself, ensuring it works as expected with every release.

packages/next/README.md

@@ -21,7 +21,11 @@ Visit <a aria-label="next.js learn" href="https://nextjs.org/learn">https://next
 
 ## Documentation
 
-Visit <a aria-label="next.js learn" href="https://nextjs.org/docs">https://nextjs.org/docs</a> to view the documentation.
+Visit [https://nextjs.org/docs](https://nextjs.org/docs) to view the full documentation.
+
+## Who is using Next.js?
+
+Next.js is used by the world's leading companies. Check out the [Next.js Showcase](https://nextjs.org/showcase) to learn more.
 
 ## Contributing