2. If tourist is going to buy something at the store, rthat is far from the city center, he should be easier.
3. Arriving in Sheremetyevo or Domodedovo, order taxis by phone or go to Moscow to "Aeroexpress". Shuttle buses come to the outskirts of the city, where to get lost is very easy.
4. Taken at the station - Savelovsky or Paveletsky - taxi will cost several times more than due to the airport.
5. Metro ticket is sold only in the metro. Forget the newsstands. Metro - is a separate city.