Should I find a partner or a teacher to learn German ASAP?

I am planning to visit my friends in Germany by the end of this year.

Probably I would not have any problem even if I am just speaking English,

but I would like to be able to speak very simple things in German 

especially, when I am paying for something ordering something and to greet those people I will meet over there.

I am just wondering if I should pay and find a teacher here rather than looking for a partner.

what do you guys think? would it be worthy to find a teacher and get proper classes? 

I am more likely considering to hire somebody at the moment though.