We offer product like this and it can be a very arduous task. 

We're still putting offers on homes and see double digits in competing offers. 

Meetup.com is a good resource for those but some of the groups will also post here on Bigger Pockets Marketplace too.

You can use online resources, such as hospital directories or real estate websites, to gather information about the location of hospitals and the surrounding area.Analyze the demand: Look into the demand for rental properties in those areas.

I kept meaning to buy for a few years, but I’ve been simply overloaded with a startup.My current country prevents me from purchasing property (non-citizen), and doesn’t offer fixed rate mortgages - the floating rate is high rate at 7%, and has been about this the last 20 years.

You can beat the ideas all to death and talk in circles about what you "think" is wrong with the idea, but I'm actually doing it and I'm offering proof. 

Make low offers.  

He also likes to tell me how much I should offer on the property and the final amount it is worth but I have learned that I know more about this aspect than he does.

This is a great place to learn and to connect with people so take advantage of all the great resources.

I think a better resource for your purposes is the Fair Housing Council of OC.