Read books on investing in real estate, listen to the podcasts, attend webinars and stay active on the forums while connecting with other investors in your area and pick a niche.

County has declining population so this is kind of a niche but stable market.

The second way is they charge $XXX per month whether it snows or not but the cost is never more than that specific $XXX per month charge even if they come out 15 times.

Could be a source specific to your market or to the overall market.Like they all say, you gotta know your market!!

You also don't have to be licensed to sell notes in most states, FYI.If you disagree I would love to hear specifics, as to what you think makes a note liquid, as all you have stated is liquidity is the ability to buy and sell at will.

This is in regards to a specific deal, so for the sake of context: The property is Vacant Land, originally had a house that the city demolished due to abandonment by owner. 

If you have a specific property in mind you can get a free preliminary title from the title agency that you intend to purchase your title insurance policy from.  

As you get into more real estate investing you will learn what specific costs are in your market.  

Do you have a specific property or few properties that you are looking at?  

There was a podcast about student housing rentals that might be helpful:Podcast #140 The Riches are in the Niches with Bill SyriosAlso, I am curious as to which small bank that you used to finance your fourth property.