@ Ash, I went through that site today and I think there's need to start practicing early.

Europe is kinda strict and formal than the US where anything goes.
They didn't talk much about language -just the fact that they speak german,so what % of austrians speak English? I trust that it's a commonly spoken language in public otherwise I may have to learn the ABCD's.
Cultural taboosThere are no real taboos in Austria that do not apply in other Western countries. However, there are a number of taboos and issues that are considered inappropriate when dealing with your Austrian counterparts and you should observe these so as to avoid any inference of disrespect to views and ideals. Being aware of these will make your business dealings more pleasant and will assist you in building strong relationships with Austrian business people.
Do not discuss World War II or criticise Austria in general
Austrians are not Germans, even if they speak the same language! This is very important. Austria and Germany have very different customs.
The Austrians value their privacy and personal space immensely. Do not ask personal questions related to occupation, age, family or children if your relationship is in its infancy. Once you have a well-established relationship, those topics are okay. However,
never speak about salary. Salary is an absolute taboo topic for Austrians.
Austrians are more
formal and punctual than most of the rest of the world. They have prescribed roles and seldom step out of line.
Compliment carefully and sparingly – Austrians may find personal compliments embarrassing.
You should not lose your temper publicly. This is viewed as uncouth and a sign of weakness.
Stand up when an elder or higher ranked person enters the room.Do not shout or be loud; do not put your feet on furniture
When making or answering a phone call, first introduce yourself by saying your name (most people use their last name, but you can also use your first name if you prefer). It is considered impolite if you don’t say your name even when you use other polite greetings such as “hello” or “good morning”.
It is impolite to cross your arm over people who are shaking hands.
It is rude to chew gum in public.
Talking while your hands are in your pockets is also considered impolite.