Please install Start TYPO3 Responsive! with Launch TYPO3 Responsive! You will get a ready-to-use website with sample pages, data and themes.
You can install it in an empty TYPO3 installation and you can install it in TYPO3 installations, which contains websites.
This launch runs with TYPO3 8.x, 9.x and 10.x.
See the workflow at Screenshots > Launch it!
You can test the launch at https://start-typo3-responsive.de/launch-it/launch-start-typo3-responsive/
If you like a responsive website extended with a database for the lobbies and the organisers, you can use the TYPO3 distribution "Launch TYPO3 Gruene!" (launchstartgreen).
TYPO3 Gruene can manage events, locations and news among others. To get rid of the corporate design of the German party Bündnis 90/Die Grünen you have only to replace TYPO3 GRÜNE (startgreen) with Start TYPO3 Responsive +Customer (startcustomer) after the installation.
See details about TYPO3 Gruene at https://typo3-gruene.de
Install the distribution Launch TYPO3 Gruene! (launchstartgreen)
Start the installation. See details at: https://docs.typo3.org/typo3cms/extensions/launchstartgreen/
You can test the launch at https://start-typo3-responsive.de/launch-it/launch-typo3-gruene/