Sometimes we may mix up "culture difference" and "discrepancy on individuals". When we get along with people from a different culture, it is important to keep good communication, so we can understand the basic "rules" first  (for instance, something serious about religion, taboos), then we won't seem offensive. Vice versa, they need to understand our rules.

When facing such difference, we need to be tolerant and flexible. 

before dealing with the different culture, I think we should know human being is all same. you could be them if you were born in their country. By doing it we can understand each other easily.

We should be open-minded, respect their cultural sensitivities but also expect them to respect ours.

its good to have friends from different cultures and for me trying common point is perfect

Be open-minded about every foreigner you meet and every new culture you learn about, because the beauty about it is that every time you get to know new people and new cultures, you get to know something new inside of you that you didn't even know it was there.