Law / Freelance taxes in Poland, made simple. [12]

Hi everyone,

I find myself having to use Poland as a base-work for the following two years and I would like to ask what the freelance taxes would be.

1/ Does anyone know how it works, just a scheme (i.e. monthly 220€ least, three-monthly taxes as worker and annually taxes based on the whole money)

2/ Is there any place (by that I mean physical and English, Spanish or Russian speaking in some big city) or website, where I could find detailed explanation?

I'm here to see whether it's worth changing the country tax receiver.
If Poland proved to be cheaper, why not, as I remember how clever the move was when I stayed in the UK for a few months, that was literally saving lol!

Thanks a bunch :)