u/portotto

It might be a stupid question, I'm an exchange student from Turkey (or Türkiye) currently studying in Giessen experiencing their first day in Giessen and I know very few things about german culture. My main concern is that is it safe to drink tap water in my dorm? What are the main things I should know about before doing anything so I don't offend anyone or do something wrong accidentally (Or do something in a complicated way while there's an easier way maybe?). All of these are very new to me and I want to adapt to german culture and german living as soon as possible. Thank you for your answers in advance.