if i can pick up the language
Polish is not a language you "pick up". It is extremely difficult for native English speakers. I wish you all the best, sincerely, but just to warn you, studying Polish is like unravelling the Gordian knot. As for teaching, as has been said, spring is just about the worst time of the year. Harry's right, Kraków is saturated. Try somewhere like Lublin. You can always visit Kraków.