but my idea is to create a point which helps foreigners who wants to study in Poland from the beginning
Do you mean a website? You could give it a try. There are lots of sites that give information on life in Poland for people who are considering studying there, but some personal support would be a new angle. I presume your services would be free so you'd need your site to generate some revenue from advertisers or whatever, otherwise I don't think it's realistic as, if the website becomes popular, you could spend a huge amount of time sorting out things for people and you couldn't afford to do that for free.