Your quest won't be an easy one.
1. Apply to CNO
right away. That process is a lengthy one and having it in progress will look better on your application than if you wait until you have a job.
2. There have been many posts about how difficult it is to get a foot in the door in Toronto. It's one of the most recognized cities in Canada and a destination for lots of newcomers to Canada. The nursing field is pretty well saturated but since you say you're not picky about the type of nursing you do, just WHERE, you might
have an easier time.
3. The sooner the better! The process of hiring has become quite lengthy and convoluted so you might not hear anything about an application you've submitted for a month or more after the submission. Then there's arranging interviews, reference checks and on-boarding... it seems like it takes FOREVER!
4. A large percentage of HR management is accomplished on-line these days so that's where I would start. There are job sites that have listings for nursing jobs
and they'd also be an avenue for you. Just be aware that the ones ending up on those mass-market sites tend to be unattractive for one reason or another, and has likely been vacant for some time.
Be prepared for this process to take a long time, for it to be expensive and frustrating. It will be, no question. If you're determined, you'll make it happen, but not without some struggle.