So, I'll have to live in Germany for 6 months, starting next march. I have zero knowledge of their language. What should I learn first?

So, obviously I have too little time to prepare. My knowledge of german culture is about what you would expect from someone who only thinks of Germany when it comes to cars, football and octoberfest. Ah, and you know... the war things, but better not bring this up, right?

Also, I won't be in any big city, just a town with a population of 100k.

What do I need to know to make my life a little easier? What should I start learning and from where?