I am living in NJ and working NYC. Employer has given me NJ-W4, IT-2104, and IT-2104

Thank you so much for your help! I am so lost!

My situation: I am single, 1 job, and am responsible for my 2 younger brothers.


http://ift.tt/1NrhiO2
First question: Do I need to fill out the NJ-W4?


http://ift.tt/1NrhfSi
Second question: What do I put down for allowances on lines 1,2? Do I file as head of household?


http://ift.tt/1NrhfSk
Third question: I put down 100% for New York State and 0% for Yonkers?

I am living in NJ and working NYC. Employer has given me NJ-W4, IT-2104, and IT-2104