Hey German folks-quick question

First of all, I'm here and will be sending you my Handy numero as soon as I have it (hopefully today)...

What is the process for receiving a package here? My mother sent me one to my new address here about a week ago, so it should probably arrive soon...my roommate here isn't sure (she doesn't even know where the post office is haha). Anyway, I guess I have to pick it up somewhere, maybe the post office for this area? I know it's probably going to be complicated, but I'm not sure where to start...

Vielen Dank und wir sehen uns bald!
Saustal

-Ha ha ho ho and hee hee.