How to use it?
As a quick way to use Composer, the Base Distribution can be downloaded. It is assuming you have Composer already installed on your system. Detailed information is available in the TYPO3 Documentation.
For an easy customized setup of the core extensions for your project's
composer.json, use the TYPO3 Composer Helper.
It is recommended to include extensions directly from Packagist instead of using the TYPO3 Composer Repository. For example, better require
typo3-ter/news, if you want the News extension in your Composer installation.