Core Documentation

Place of the main TYPO3 core documentation, with TYPO3 Explained being the head of everything.

Beginners may have an additional look at the available tutorials depending on which task should be achieved.

Manual Description
TYPO3 Explained The main document about TYPO3 Reading this is recommended for anyone. This goes through all main aspects like installing, hosting, configuration, security aspects and detailed programming API's. Single chapters are for different target groups and outlined accordingly.
Core ChangeLog New Features, Breaking Changes, Deprecations. Reading up here is strongly recommended for developers. For everyone else, the What's new slides provide the information in a more digestible way.
TCA Reference Reference for the Table Configuration Array (TCA). TCA can be used to extend the definition of database tables.
TSconfig Reference Reference to Page TSconfig and User TSconfig. This is used to configure the backend.
TypoScript Reference TypoScript is a configuration language that is specific to TYPO3. This is used to configure the frontend. For an introduction see the TypoScript in 45 Minutes tutorial.
Fluid ViewHelper Documentation A complete reference of all available Fluid ViewHelper within TYPO3 CMS.

With our ongoing consolidation efforts, some documents have been merged into other documents for better overview, less duplication and confusion. The latest versions of these documents only show a "Has been moved" message, but in case outdated information for older TYPO3 versions is looked for, these obsoleted documents are listed here:

Manual Description
(OLD) Inside TYPO3 OLD, current core v9 version has been integrated into TYPO3 Explained
(OLD) Core Coding Guidelines OLD, current core v9 version has been integrated into TYPO3 Explained
(OLD) TypoScript Syntax and In-depth Study OLD, current core v9 version has been integrated into TYPO3 Explained
(OLD) Services API OLD, current core v9 version has been integrated into TYPO3 Explained
(OLD) File Abstraction Layer OLD, current core v9 version has been integrated into TYPO3 Explained
(OLD) Security OLD, current core v9 version has been integrated into TYPO3 Explained