The Canadian Dollar is the official currency of Canada. It is abbreviated either with the dollar sign $ or Can$ or C$, in order to distinguish it from other currencies. The Canadian dollar is divided into 100 cents.
The currency is sometimes referred to as loonie by foreign exchange traders and analysts, due to one-dollar coin featuring a loon on it. As in any country, the paper money has different colors and designs. Blue paper money is for 5 dollar bills, other colors include purple, green, red, and brown.
Many hotels, restaurant, and shops are likely to accept US dollars, however, at a lower exchange rate in comparison to the one set by a bank. Converting your money to the Canadian dollar might be a good idea. If you wish to pay by card, exchange rates will be determined by the bank and the day of your purchase.