How to extend a student visa in Poland?

I am Erika, and I study nursing in Poland. I am from Japan.
I have a visa until July 2018, and I need to extend it for next year.
Right now, I have no idea how to extend the visa. I know I need insurance, certification from dean's office, bank certification and other staff. However, I don't know how to do in immigrate office. I have no idea how to make an appointment. I also wonder do I have an interview for visa extension?

I need help....

Just go to the immigration office, and they will give you the application, with instructions, and a list of the documents you have to supply. It's not difficult, as long as you do what they say.

Why dont you apply for A Temporary Residence Card, it then will help you prolong your stay in Poland

hi.i`m going to extend of my student visa. i applied for karta pobytu but I don`t know I will get it or not. so do you have any other way about extending of visa