In a composer-based TYPO3 installation you can install the extension EXT:news via composer:
composer require georgringer/news
In TYPO3 installations above version 11.5 the extension will be automatically installed. You do not have to activate it manually.
If you are using an older version of TYPO3 or have a legacy installation without composer, have a look at the Extended installation chapter.
Update the database scheme¶
Open your TYPO3 backend with system maintainer permissions.
In the module menu to the left navigate to Admin Tools > Maintanance, then click on Analyze database and create all.
Clear all caches¶
In the same module Admin Tools > Maintanance you can also conveniently clear all caches by clicking the button Flush cache.