I'm 16 years old making $500 a month, do I have to pay taxes?

I'm 16 years old and I just got a job as a private childcare provider for two children ages 1 and 4. I would be working Saturday trough Wednesday, 10am to 7pm and would be making $500 a month. I live in Reno, Nevada and I am not sure if I am making enough to begin paying taxes or not. Please someone let me no because I'm going to start working next Monday.