Law / Plans for starting a company in Poland / cost, types, registration [12]

Hello,

I'm from Holland (i'm living in Poznan now) and i want to start a online company in Poland which will firstly consist of one website and maybe later it will extend.

Therefore i am not in the need of an office. I've been reading this forum and already get some answers but also get some more questions :) because the answers are not always the same- they contradict in some cases.

If i'm correct then there are different types of companies to register (which is pretty obvious) and they are categorized in for example education, real estate etc?

How easy(or hard) is it for me to setup a company? And which type of company (registration) would be the best option for me?

The last question i have: how much will it cost me to start with the company and how much will i pay on a monthly or yearly basis?

I hope you can give me answer or direct me to people who can help me!
Thanks a lot in advance / z góry dziekuję.
Any help would be much appreciated, thanks!