Help within TYPO3 CMS¶
There are several features built-in to the user interface of the backend to help guide you when using the TYPO3 CMS.
Changed in version 12.0: The context sensitive help, also called “CSH” has been removed as it was outdated and not maintained. Refer to the TYPO3 online documentation instead.
Tooltips¶
Hover your mouse pointer over buttons and icons to display a short description of the function.

See the Tooltip help for the Forms module
TYPO3 online documentation¶
You can find the startpage of the official TYPO3 documentation at https://docs.typo3.org/ .
You can conveniently open this documentation from your TYPO3 backend:
In the top bar, click the question mark icon to access the Help section, then select the TYPO3 Online Documentation module.

The TYPO3 Online Documentation in the Help menu