Admission is free.
When you exit the train station, you will be on Gun Hill Road. Walk to Boston Road, turn right, and walk 4-5 blocks until you hit Eastchester Road. Make a right and look for 3371 Eastchester Road. It does not grant work authorization and does not offer you protection from deportation. If you meet these requirements, you will eventually be allowed to apply for a Green Card and become a permanent resident even if you are present in the US illegally.