You can also stop at the downtown bike shops for directions and pointers to other local trails. Some challenging parts as well as some twisty technical ride through forest. A few fast loops for the rushed. Doesn't matter where you go on this trail. Its all good.
Some places are really hard and some are really easy.
Start at the park by the Canadian Tire, ride the public bike path, and keep a lookout for trails that shoot off on the left side. If you've found the north shore stuff then you got on the right trail. There are a few annoying low overkead tree branches, but the ride is very cool. Hopefully the freeriders keep up the good work, as the north shore stuff is pretty cool but more of it would be alotta fun. I only ride it once a year for the Northern Gnarly Charly bike race, otherwise I just ride in Uxbridge area forests cuz I don't have a license.