Hi @siamesecult. It is great to be inspired by dream-project, we all were/are. But the reality is usually that you will have to learn how to make at least rough simple prototypes, to express your ideas.
MMO - is hard, very very hard. Is one of the technically hardest genre in gaming industry.
Making even a MMO prototype can prove challenging.
Best way to start learning, is to do it gradually, starting from smaller things, and slowly but steadily progressing through the journey for game development, which is believe me - is hard work, but enjoyable one