There are two basic ways to get into sex work or adult jobs in Toronto if you're new:
1 - Craigslist. The Toronto Craigslist site lets you advertise your adult services if you want to do stuff independently (browse first to get an idea of what to post). It also has posts from escort, stripping, and nude modeling companies looking for girls. But buyer beware.
2 - Find companies and agencies on the Internet (do a search for Toronto callgirls, Toronto escorts, Toronto strippers, etc) - they usually have info on their sites about jobs. You can also browse the back pages of Toronto weekly magazines like NOW, there are lots of places looking for girls. Make sure the manager can answer your questions about payment, safety, and procedures.
Once you're used to the city, you'll start meeting people and you'll find people to ask. Strip joints and agencies in Toronto are regularly looking for girls.
The thing you should know before you go into this is:
a) It has a high danger quotient.
If you're going to be alone with a client or even a manager, it's possible that you could be sexually assaulted, beat up badly, or susceptible to any number of STDs/STIs. (I recommend the Hassle Free Clinic in Toronto as a place that provides judgment-free sex-related healthcare.)
You can be safer by making sure people know where you are, by never turning your back on a client, by keeping a cellphone with you, by always (always!) using a condom if you do sex work, and so forth, but keep in mind that it's never the safest job.
b) It's not just e********y.
For example, being a pro dominatrix pays a lot and there's high demand. But you have to know what you're doing when a client says "I want CBT" or whatever. Stripping seems easy, but there are lots of men who are extraordinarily cheap with dancers. Your managers may or may not be respectful of you. And never assume photos or video aren't being taken and won't end up on the Internet.
On top of this, what initially seems like an easy financial venture can bring with it emotional issues that you might not have expected. Your experiences of sex, intimacy, physical comfort and safety can change because of adult work, even if it's just stripping. I'm not saying that'll happen to everyone, but it's a good idea to be careful. I recommend reading: http://collegecallgirl.blogspot.com/2007/08/price.html
In other words, there are also drawbacks to that big money (if it becomes big money) and those drawbacks get bigger as the jobs become more lucrative. So it sort of balances out. (Another downside is that you'll need job references eventually and you can't use sex work obviously). Keep in mind that people - especially online - can be much more dishonest, shady and skeezy than they seem. There are also great people in the adult industry, of course, but watch your own back.
Good luck and happy stripping (if that's what you end up choosing)!