@Shaun MorganShaun,  Some generals numbers for you; 2% rule (search the millions of hits on any search engine), Return on Investment (ROI), Cash on Cash returnCome up with a standard for these any other other number you can calculate.  

Post a trespassing notice just like you would a standard 3 day notice, which you can find off of Google.

Do you get this kind of info from google, certain government officials/departments?

  - the best way I've found to determine if there's a market is to go to airbnb / vrbo / homeaway and search for similar properties.

Welcome to BP @Jacen Lehman, I can't help with auido books but if you use the search here at Bigger Pockets maybe you can find some that others recommend.

I am selling this property which was purchased at a tax lien sheriff sale, I signed a contract with one of those contractor guys who buys for cash, but he is not licensed and is just trying to sell it or wholesale it on the MLS, leaving me without any word on the process, The contract said they should have started the process of the Title search and notified me within a 5 business days and notify me within 20 days of any problems with the search, they did not start the search until 15 days from signing the agreement, then i sent an official cancelation he is accusing me of breaching the agreement and want to file a lien on the property for his right to buy??

Search the site for house hacking and you will find some tips and experiences.

You can research it yourself, there are companies that will do title searches for a subscription fee, or if you have a good relationship with a title company they may do prelim's for you but if you are sending them dozens of properties a week you better be giving them a lot of business.

I think it would take me about two weeks of diligent searching to grasp a certain market - but I would need the help to discover recent sales, etc..It’s a treasure hunt; fun, exhilarating, and pure American Dream stuff. 

f...Or simply search, "Indianapolis Out Of State Investors" and you'll be sure to find out.