If you are a totally newbie and plan to open a server with that population, please reconsider. Your players will get disappointed with your knowledge.
As a starter you may practice on your own offline server , when you are confident enough on your knowledge, publish a server for your friends and it will help you to gain experience. Later you can publish a small server to gain management experience. Eventually you may try to open a server for big population which requires enormous money, knowledge, experience, passion and dedication.