Recovery after Clean OS installation

It appears I need to perform a clean installation of my Mac OS (10.14.1) and reinstallation of all my software. My wife and I have a SpamSieve Family version and the License Key for that. Purchase order number CCO170417-6777-19322. At time I upgraded from Single User to Family Pan I was given an order code beginning with the characters SS30O

Is there any special procedures I need to follow? Or do I just download the software, install it, provide the license key and let the system ‘learn’ about my good and bad emails?

You could either do a fresh install like that and enter your license information, or back up the license and training data and copy it back after the macOS install.