There aren't people here who still think Nietzsche was a nihilist, right?

Yeah, exactly.

I'm just starting to read Nietzsche (Beyond Good and Evil) for the first time. I'm having a hard time with it because I'm an idiot. Is there anything I should read/watch to give me a better understanding of what he was talking about?

He literally calls himself an immoralist. "Moral objectivity" usually and conventionally means clear rules (most often of the form "thou shalt not") equally valid for everyone. Nietzsche's perspectivism, having an "objective" (more like subject-object combinations) typology and "ontological" differentiations, is usually described as having an ethics rather than a morality. Maybe the distinction is conventional rather than rigorous (ontological, etc.), but it helps avoid some if the usual confusion.

In which order should i read Nietzsche's works? Which book do i start with?

what did he mean by this?