[TASK] Refactor installation and setup chapters (#723)

* [TASK] Refactor installation and setup chapters

- Assume DDEV and Composer as default
- Add quick start installation instructions
- Add setup for Development/DDEV application context
- Reorder cards and menu for better flow
- Link to full installation guide for alternatives

releases: main, 13.4

* [TASK] Language checks

    Releases: main

* Apply suggestions from code review

Co-authored-by: Sven Finner <63340669+sfinnerWco@users.noreply.github.com>

* Update Install.rst

---------

Co-authored-by: Sarah McCarthy <sarahmccarthy123@yahoo.com>
Co-authored-by: Sven Finner <63340669+sfinnerWco@users.noreply.github.com>

Author: 3 people

Documentation/Installation/Index.rst

@@ -1,23 +1,35 @@
+:navigation-title: Installation
+
 ..  include:: /Includes.rst.txt
+..  _installation_index:
 
-..  index:: installation
+=====================================
+Prepare / Install local TYPO3 project
+=====================================
 
-..  _installation_index:
+Setting up your local TYPO3 project requires a few simple steps.
+This chapter will guide you through preparing your development environment,
+installing TYPO3, and getting ready to build your first website.
+
+The rest of the Getting Started guide assumes that TYPO3 has been installed locally
+using DDEV and Composer, as described here.
 
-============
-Installation
-============
+If you prefer a to use a different installation method (for example, manual
+installation on a server), see the full
+`TYPO3 installation guide <https://docs.typo3.org/permalink/t3coreapi:installation-index>`_.
 
 ..  toctree::
     :hidden:
     :titlesonly:
 
-    SystemRequirements/Index
-    Version
+    UsingDdev
     Install
+    Setup
+    Version
+    Updates/Index
     DeployTYPO3
     ApplicationContext
-    Updates/Index
+    SystemRequirements/Index
 
 ..  card-grid::
     :columns: 1
@@ -26,41 +38,39 @@ Installation
     :class: pb-4
     :card-height: 100
 
-    ..  card:: :ref:`System requirements <system-requirements>`
+    ..  card:: :ref:`Using DDEV <ddev>`
 
-        System requirements for the host operating system, including its web
-        server and database and how they should be configured prior to
-        installation.
+        Learn how to install, update, and manage DDEV to run your TYPO3
+        projects locally.
 
-    ..  card:: :ref:`Version <typo3-version>`
+    ..  card:: :ref:`Installing TYPO3 with DDEV <install>`
 
-        This chapter helps you choose the best TYPO3 version to start with and
-        provides resources for getting it.
+        Follow a quick and simple guide to install TYPO3 locally using DDEV,
+        Docker, and Composer.
 
-    ..  card:: :ref:`Installing TYPO3 <install>`
+    ..  card:: :ref:`Setting up TYPO3 after installation <typo3-setup>`
 
-        This is a step-by-step guide detailing how to install TYPO3 for local
-        development using DDEV, Docker and Composer.
+        Complete TYPO3 setup by creating an admin user and configuring
+        initial options.
 
-    ..  card:: :ref:`TYPO3 Updates <getting-started-typo3-updates>`
+    ..  card:: :ref:`Choosing a TYPO3 version <typo3-version>`
 
-        Here we explain the cycle of TYPO3 updates, and show you why and when
-        a TYPO3 update is useful.
+        Find out which TYPO3 version to start with and where to get it.
 
-    ..  card:: :ref:`Deploying TYPO3 <DeployTYPO3>`
+    ..  card:: :ref:`Keeping TYPO3 up to date <getting-started-typo3-updates>`
 
-        After you have installed TYPO3 locally, learn how to move your result
-        to a web server.
+        Learn about TYPO3 update cycles and how to keep your installation secure
+        and up to date.
 
-    ..  card:: :ref:`Application context <application-context>`
+    ..  card:: :ref:`Deploying TYPO3 to a server <DeployTYPO3>`
 
-        Use the TYPO3 application context to manage settings for
-        development and production.
+        Learn how to move your TYPO3 project from your local DDEV environment
+        to a live web server.
 
 ..  _installation_advanced:
 
 Advanced installation topics
-============================
+=============================
 
 ..  card-grid::
     :columns: 1
@@ -69,7 +79,17 @@ Advanced installation topics
     :class: pb-4
     :card-height: 100
 
-    ..  card:: :ref:`Tuning TYPO3 <t3coreapi:TuneTYPO3>`
+    ..  card:: :ref:`Application context <application-context>`
+
+        Use the TYPO3 application context to manage different settings for
+        development, testing, and production.
+
+    ..  card:: `System Requirements <https://docs.typo3.org/permalink/t3coreapi:system-requirements>`_
+
+        If you want to install TYPO3 manually or deploy to a production server, check
+        the full system requirements for PHP, database, and web server.
+
+    ..  card:: `Tuning TYPO3 <https://docs.typo3.org/permalink/t3coreapi:tunetypo3>`_
 
-        This chapter in TYPO3 Explained contains information on how to configure and optimize the
-        infrastructure running TYPO3.
+        Learn how to configure, optimize, and fine-tune the infrastructure
+        running TYPO3 for better performance and scalability.