Work / I definitely want to move to Warsaw- But i'm lost, Where should i start?? [3]

Hi everyone! Hope everyones ok :)

Well i want to move to Poland at the end of the year for a few years in order to improve my Polish but i'm not really sure where to start with planning for it. I'm going to get a CELTA qualification before i go so i can have a chance of getting a job. Though ideally i'd like to do a Polish language course as well.

Is it best to look for a English language school (where i can work) which has accomdation with it? Or is it best to try to get my own accomodation?

If i wanted to get my own accomodation, how can i find somewhere?

I'm British so i know i'm entitled to work in Poland, but if i'm planning to stay for 2 years do i need to fill in some forms for the local council or anything?

Any advice on the pure basics of living there would be much appreciated, thanks so much. :) x