Most of the Aupair Agencies state that Aupairs are not Nannies or Housekeepers. Aupairs have some childcare experience, some more than others, but they will rely on your guidance the first two weeks. Every child is very unique so any tips on how to handle your children will be very welcome by the Aupair. If the Aupair is little bit shy the first couple of days, please encourage them by talking to them and asking them questions. This will give them confidence to talk and not to worry about the mistakes they might make. They might be shy around the children the first day or so, so please encourage them, show them the children's bedrooms, their favourite books, and suggest some games and activities so the children can get to know them better.
All Aupairs are expected to help with household chores but please do show them how would you like to have things done. Clear list of duties that needs to be done every day and when, it's great and it will guarantee that all the tasks are carried out. If the Aupairs forgets to do something please do tell her and highlight it in her duty list so this does not happen again.
Aupairs will certainly need your guidance the first 1-2 weeks, normally this is their first time in the UK and everything is new to them, the language, area, etc. so please be patient with them.