I have about 5-10 ads running at all times per city for different things and you constantly have to change them up because the market gets dry and people scroll straight past ads they've already seen before. fb marketing is way more tedious than direct mail and getting way more competitive I think but in the end I only pay about $4-5 per warm/hot lead which you will never get with direct mail.

I came across this duplex ... maybe you can take the square footage from this duplex and scroll down to the "estimated value" and click on the "per sqft" tab it goes back to Aug 2008 if you hover over the line of the chart it will show prices by month and year, but you would have to breakdown the per sqft pricing....with the price and sqft listed. http://listings.findthehome.com/l/122192534/20129-...  

Are there useful tools for me to get a sense of what market rents are, or should I just scroll through craigslist rentals, and contact local agents and management companies? 

Really saves me time in mindless info overload perusing.  

If you look up an address and scroll down on the page, RedFin will have comps for you.

Scroll your mouse over the "Tools" tab and click on the "file place" to find the article in question.

Also, enter the street name in the county tax bill lookup area; then scroll through for ownership with company names.

I've watched a lot of videos, have a out of state mentor, and have read some things, but I am still having trouble with the concept of finding buyers.With this said today I was scrolling through FB looking for a buyers group, but couldn't find anything when I stumbled upon a retargeting marketing ad by "Than Merrill" for a 2hr seminar about a mile away from my home.

I do not know how much you read or educate yourself about REI, but I would recommend you start by checking the tab on THIS website, up there that says EDUCATION and scroll down to books and get BUSY.

After scrolling through this site, I came across this: A professional biography is a must nowadays to describe one’s career in an impressive way.