Open your hosting service and choose the application tools. Select WordPress, choose the domain where it should be installed, enter the site title and administrator details, then start the installation.
After installation, open the WordPress dashboard using the administrator address created during setup. Keep WordPress, themes and plugins updated, and make a backup before a major update.
Use a strong administrator password and remove plugins or themes that are no longer used. A small test page such as example.com can be useful before moving a live website.