First time investor questions

[Jason Meszaros]

Hi all, First time writing in the forums. I am 22 years old living in Barrie, ON Canada, just north of Toronto. I have been researching real estate investing for a little while now and it is something I have become interested in pursuing while still working a full time job. 

The strategy I plan to use is investing in rental properties (duplexes, triplexes, fourplexes) to generate passive income, and in time be able to make my living solely from this income. I do understand that the market, at this time is in favour of sellers, so if you feel this is a bad time for me to begin investing with this strategy, please let me know. Anyhow, on to my questions.

First off, I am wondering the most accurate way to calculate an investment properties cash flow potential. Along with where I would find the cost of a units property taxes, maintenance etc. to input into calculations 

Next, who does one in Canada go to when looking for investor friendly financing and or low money down lenders for beginner investors.

Any information or guidance would be greatly appreciated!