SilverStripe can be installed via composer or through the extraction of downloaded zip file.
To install through composer we run the following command
composer create-project silverstripe/installer /path/to/project 3.4.0
A download zip file can be found on the download page of the SilverStripe website. Once downloaded, this file needs to be extracted into the root directory of the desired project.
Upon visiting the website for the first time an installation wizard will be presented to configure and set up the SilverStripe install.