If you are looking to travel abroad then you are going to likely need to exchange the money you use at home for money that is used in the country you will be in. This used to be something that a quick trip to the bank could solve. That has all changed these days and you can do that as well as a whole lot more online. The only place where this can get a bit complicated is when you want to get the best rate possible. With the currency exchange rates changing all the time, you can wait for the best rate and lock it in. something you might have not been able to do at a bank.