Where is a good place to meet in the airport?
Outside of baggage claim is always a good place.
There are two different baggage claim areas at Schipol (one for Schengen, and another for non-Schengen flights), so it might be confusing. The most popular meeting point is in front of the large Burger King in the railroad station/front entrance area. Looks like this:
Burger King Photo, impossible to miss.