Welcome to the official TYPO3 Documentation

• TYPO3 Concepts introduces some of TYPO3s core concepts.
• System Requirements for the host operating system including its web server and database.
• Installation Guide details the entire installation process.
• Setup Guide guides you through the next steps post installation.

• Editors Tutorial explains the creation and management of pages and content.
• Form System Extension is a powerful tool that gives backend users the ability to create web forms.
• Localization Guide covers everything needed to add additional languages to a TYPO3 site, and how to translate content and pages.

• Fluid is TYPO3’s templating engine. Fluid acts as the glue between your static HTML templates and the content you create in TYPO3’s backend.
• Sitepackages allow you to bundle your Fluid templates and other site assets into a single, reusable extension.

The configuration overview in TYPO3 Explained gives an overview of the various configuration options available. It contains a description of the main system configuration options.

• Site Handling and Configuration shows you how to setup domains, languages, human-readable URLs and error pages.
• Backend User Management explains how you setup backend users and grant them specific access to your installation of TYPO3.

• Minor Upgrades contains information on how to upgrade to a newer minor version of TYPO3.
• Major Upgrades details how to upgrade to a newer major release of TYPO3. 11.5 to 12.4 for example.
• Upgrading Extensions details how to upgrade extensions using Composer.
• Migrate A TYPO3 Installation To Composer Information on how to migrate a legacy installation of TYPO3 to a Composer based installation.

Getting started with extension development:

• Introduction to extensions in TYPO3
• Extension File structure
• Naming conventions and Coding guidelines

• TYPO3 Explained contains detailed information about concepts and APIs for core and extension developers.
• The Core changelog lists all relevant changes for each TYPO3 version since 7.
• The references section lists all available reference manuals.

Internationalization | Translation | Multiple Languages

• Localization Guide
• Supported languages
• Manage backend languages
• Working with languages as an editor
• Localization in "TYPO3 Explained"

The "Core contribution guide" contains information for creating core patches:

• Create a patch
• Commit message rules
• Setup an installation with DDEV

But contributions aren't just about writing patches. Contributions happen in numerous other ways, including

• Writing issues
• Review patches

You are welcome to click on the "Edit on GitHub" button on any page to propose a change in the official documentation whenever you see something that you think can be improved.

• The blog post Start Improving Docs Now to Grow TYPO3 gives a good introduction to documentation contribution.
• Contribute to the TYPO3 documentation explains the workflow for contributing.
• The documentation is edited in text files using reStructuredText syntax. Use the Cheat sheet: reStructuredText to lookup most commonly used directives.
• General conventions can be found in Documentation content style guide
• How you can help lists some general tasks to get you started.