What would be a good first camera for aspiring photographer?

Okay I've got tons of cameras already I just want one especially for work. I'm 19 so nothing crazy expensive. I'm starting to get jobs taking pictures for different occasions. I prefer nikon.

If you don't want to spend too much money then you're probably looking for an entry level DSLR, or a bridge camera. The brand is irrelevant unless you already own Nikon DSLR lenses.

If you are serious about photography, then a DSLR is the way to go.

Indeed DSLR if you are serious. There are now only 4 good brands new - Nikon, Sony, Canon, Pentax.

The fact that you already have lots of cameras suggests that you shouldn't spend too much.

I'm puzzled. You have "tons of cameras", but you're looking for a first one? What is missing in all those cameras that you expect a new one will provide?