Canada is one of the safest and most comfortable places to travel in the world.  So, just keep a couple basic pieces of advice in mind.

• Make sure to know a little about the area you're in, whether city or wilderness. Ask a resident or knowledgeable fellow traveller for tips on getting around (without getting lost), danger spots, sketchy neighbourhoods, and other pertinent points.
  
  
• Be polite, and as friendly as you can, but always with a bit of scepticism in reserve. Canadians are usually helpful, polite, kind people, and sometimes exceptionally friendly. It's not likely you'll run into tricksters, scams or menacing types; probably the worst you could experience is a cold shoulder from time to time. Just be aware, and take things one step at a time when making new friends and acquaintances.
  
  
• The above kept in mind, make friends! It'll keep you sane, and people you meet will always have information to help you have a safer and more excellent trip.
  
  
• Be wary of getting overly intoxicated with strangers in a strange land.
  
  
• Let someone know where you're going and when you mean to be back, whenever possible.
  
  
• Be adventurous, but be sane. Know the risks of what you're doing, especially in a wilderness situation.
  
  
• Fortunately pickpockets are not very common in Canada, but a money belt for cash and documents never hurts.
  
  
• Pack light, and keep valuables on your person or in lockup. Always have a bit of cash in a backup location; stashed in your main pack for instance when you're out and about.