I see that Bakhodir already gave you the info to sign up for Next Stop Canada in Toronto, which was going to be my first suggestion. They provide both settlement and employment info and they are based in your future city. Try to sign up as soon as you can so that you have enough time to take advantage of their services.
You can additionally sign up for CanPrep, which is also located in Toronto and is focused on employment only. You can sign up for many pre-arrival services, so it's a good additional option in addition to Next Stop Canada.
If you are in IT, the food industry, or the skilled trades, there are a few specialized ones for those fields. They are not specific to Toronto so they wouldn't be able to give you city-based info like Next Stop Canada would, but they would have interesting information about those fields.
And if you know anyone coming to Manitoba, please let them know about the Immigrant Centre Pre-Arrival Centre