Luckily my agent lined up another buyer right away.

Owner, buyer, and the bank.

Some questions for the people with experience: What are some basic landlord problems I will most likely run into?

The other challenge is selling it, there is a smaller buyer pool for hospitality in a small market but that was known going in Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

Once you know the "basics', you can then invest OOS more successfully.If you can't afford to invest in your home area, how will you grow your knowledge of an OOS if you take a shotgun approach to where you buy?

Quote from @Shawn Questa: Hi all,I am curious what some of the Pros would do to Help a Seller in this situation while making a Deal happen.I found a 200+ day old MLS Listing where the Agent said the Seller is in Financial Ruin, hasn't Paid the Mortgage in a year, owes about 180k on an approx. 210k House and multiple Buyers have backed out.I don't know how someone could not Pay their Note in a year and not at least be in Pre-foreclosure. 

Same with Myers home buyers, they put out alot of good homes too.   

It will familiarize you with the basic terminology and benefits.

Lower property taxes, affordable housing compared to LA (CA buyers are usually cash buyers because what they net from their smaller home in CA can get them a bigger home here, often covered by what they net from their CA sale), allergies (smog), and politics. 

There are a few options(1)You can get connected with the larger wholesaler firms in the area (2) go through PCPAO site and skiptrace the buyers of similar properties as yours, (3) hunt down the agents involved in the sale of properties similar to yours or go to local REI meetings and pitch it to the investors there.