Before you leave for Canada, it is a good idea to do some background research and find out many of the practical things you need to know before you arrive. Your transition will be much easier if you make sure you know in advance how things like telephones, banking and transportation work.
It's also a good idea to have conversations with other students you may know who have had experience with Canadian schools and Canadian culture. They may have insights or special tips from their own time in Canada.
It's a great idea to stock up on things like your favourite snack-foods, or memorabilia, photographs, music, books, television and artwork from your home-country. Some of your favourite things may not be available in Canada. It may also be worthwhile to arrange for friends or family to send you things like particular foods periodically during your time away. But be sure to check Canadian customs regulations: there are restrictions on what can and can't be brought into the country in terms of food particularly.
Finally, try to arrange to be able to talk to friends and family as much as you can while you are away. Their support may be your best defense against homesickness and the downsides of culture shock.