Nonverbal communication in Europe

There are some thimgs you Must know. Hello and Good-Bye. Please and Thank you. How much in $US? Where is the rest room? Help! Police. I need a Doctor. All your Europeans appreciate any attempt to speak in the language of the land , and if you make even the most feeble attempt, most will try to help. A Yes nod and AA No shake of the head and a smile are pretty universal.