Just a few words you should learn (beware, finnish language is FREAKIN HARD).
"Haluaisin yksi olut, kiitos"... I would like one beer, please.
"Mitä Vittua?"... What the f*ck. Might be useful when people will talk to you over there...
I didn't wanna do this BUT Haluaisin yhden oluen, kiitos.
Mitä vittua always works, no matter who or how you put it!