Run the installation wizard and complete the installation

Run the installation wizard

In the control panel of your webserver you need to assign a domain (for example https://example.org/) or subdomain to the document root of the project directory (for example `var/www/my_project/).
Depending on the server you may also need to set the PHP version that is required by the TYPO3 version.
To trigger the installation wizard, create an empty file called :file:'FIRST_INSTALL' in the root directory of your TYPO3 installation. You can do this via FTP or the command line: touch FIRST_INSTALL
Open your web browser and navigate to your TYPO3 site (for example https://example.org/)
The installation wizard will appear
Follow the steps:
- Enter the database details you created
- Create an administrator account
- Set the site name

After completing the installation wizard, log in to the TYPO3 backend at /typo3 (for example https://example.org/typo3)
Use the administrator credentials you just created

Create a site package for theming
Add pages and content - see TYPO3 Editors Guide
Create personalized accounts for each backend user - see Backend user management
Review system requirements and security settings - see security guidelines for system administrators
Install additional extensions for additional functionality.