Hi Ed,
Its very noble that your intentions are to somehow give back to this community when you are more knowledgeable. But you don't have to wait! Just be an honest, fair, respectable landlord and you can give back to your community. And THEN help us.
I'm looking for my first deal, too, and in the same area. I think you may have a hard time finding a stranger to tell you about a property that is not listed but is for sale. From my very little experience, I've learned that this buisness, like many, is all about relationships. If you're looking for those "pocket listings" the best place to start is with cultivating a relationship with a local realtor. They are the ones that have sold and bought property for investors, and will know about soon-to-be-listed properties that can help you out.
You have cash and good credit, thats great! Many investors have to be more creative to get into a home and if you can close faster because of cash, or offer better terms to a owner financier (ie, bigger down payment, deferred move out time, whatever) you'll have a leg up.
And you can develop your own buisnesses web presence when its time!
Keri gives you good advice. I got into communication with someone by doing what she suggests. Do a little searching for how to "drive-for-dollars" its (almost) free marketing.
Good luck Ed. Let me know if I can help you out in the future, or if you'd like to bounce any ideas off of me. I'm not a pro, by any means, but talking things out loud can make a big difference.
See you out there!