Potentially moving to Helsinki to study! Tips and experience

Hello everyone,
so like the titel says me and a friend are thinking about moving from germany to Helsinki to study Business Information Technology. While we both are very much into the idea, I do wanted to ask what to expect! Most people here in germany say that its not possible financially, so id would be awesome if anyone who is currently studying or has in the past few years( but of cause anyone else is also appreciated) could tell me more about the live in Helsinki! Anything can be helpful, from your own experience, what to expect financially, where you can save some money etc.