When it comes to analyzing areas to invest in I'm curious if there is a popular national website to gather stats like school districts, population, income, jobs etc?

The reason you'll need to see accurate expense is so 1)you can properly calculate your NOI, 2) you can see if there are any deferred expenses and 3)you can get a better idea as to what kind of existing owner you are dealing with.  

For example, a 3 bedroom house in Chicago assessed at approx $143k paid only $2195 in property taxes for a full year.Point is, don't rely on Zillow for accurate numbers. 

Make sure of the GSI andNOI results are accurate and then calc the cash/cash and caprate numbers and ask,  Do I like'm? 

I find that that rehab cost is the hardest for me to accurately predict.Given the case, those with higher rehab costs are the ones that represent the greatest risk to me.  

He finished by telling me he was trying to be a nice guys but apparently I'm "all business" which I told him was accurate, this is a business for me and everyday I own this house I have expenses, I can't put the project on hold for 3 days while he moves his stuff.

In many areas eviction hearings are easy to gather public info.  

Here's how it reads:Your rights under the Fair Credit Reporting Act and Fair and Accurate Credit Transactions (FACT) Act of 2003. (15 U.S.C. §§ 1681 and following.)THIS NOTICE is to inform you that your application to rent the property at ___[rental property address]___ has been denied because of [select all that apply]:[ ] Insufficient information in the credit report provided by ___[Credit reporting agency]______[Address, phone number, URL]___[ ] Negative information in the credit report provided by ___[Credit reporting agency]______[Address, phone number, URL]___[ ] The consumer credit reporting agency noted above did not make the decision not to offer you this rental.

Just be sure that if you do get a lead from there that you direct them to a site that is actually somewhat accurate like Redfin once they start working with you.

(Also struggling with this.. how do I "accurately" come up with an ARV?