How much finnish.......?

Like Robofo02 said, it depends how much time you want to put in your studies. Finnish is a very difficult language and it takes a lot of time to master it flawlessly. It won't matter though because ppl will understand you even if you don't speak very well. But you can learn quite a lot in two years, even if you study only once a week. At least some vocabulary, basic phrases... And like you said, most people speak English anyway so you don't need to worry. Good luck!=Lykky� tyk�!