So you went through the links and you still can not figure it out? Is that what you mean? I am kind of confused when you say setup on the live DB. It is setup the same whether it is live or not.
Are you wanting an install file where you just click it and it installs? It is not that simple unfortunately.
Once you get a better understanding of SambaPOS you could attempt something like Johns setup. I highly recommend you look at the tutorial I posted below however. Follow that exercise it will get you familiar so you can start making your own changes.
Follow this guide it will help you with basic setup: