When you are about to go abroad, there are few important things to remember:
-You need a valid passport.
-You need an amount of money relative to the duration of the trip.
-Remember to study the culture of the land so you don't have to behave like an ignorant fool.
-You need lots of clothes. And, if you're smart you're not taking swimming trunks if you're travelling to Greenland.
-A VISA or some other credit card, is very useful abroad, no need for currency changing.
-Remember to book a hotel room well in advance, if you're travelling to a tourist turn-out in a holiday season.