Just Getting Started

So I have been getting in a lot of photography lately. I feel the itch!! I have been working on making this my career. I have a business that I am starting up and am finding maternity leave the perfect time to get to it (during naps of course) my only question is........"Where do I begin?" I know what I want...I even have a niche that I haven't heard of in the world of photography but I just don't know where to begin.