idont have the password from the prevous owner and i dont have itunes on a computer how do i get it in it

Based on what you have written, it sounds like the device is Activation Locked to the previous owner, and only the previous owner or someone who knows the previous owner's Apple ID and password can remove it. If you cannot contact the previous owner, then you need to get a refund. You will never be able to use an Activation Locked device.

Sorry,

GB

If you can't get the PW or have the previous owner remove it from their account

Turn off Find My iPhone Activation Lock

then, as previously said. return for refund. It is of no real use to you. If y can't return it then turn it into the police since it is likely lost or stolen