For a full walkthrough and installation videos please see the page Getting Started With CUBE.
After downloading the product, first run the installer for the plugin and then the installer for the samples.
The plugin installer will install the factory presets and all of the plugin files (VST, AU, AAX, Standalone) in their default locations.
The sample installer will install the CUBE samples in a custom location, which you can set when installing. We recommend installing the samples on an external SSD drive for best results.