This needs to be limited and reduced. 

Go to Etsy and search for "rental property tracker," and you will find hundreds of nice spreadsheets to track 10-20 rentals, usually for under $10.Software has extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.

Here's a list of things to track:- Formal lease application- Formal signed and executed lease specific to your state- Payment history (I recommend using online rent collection like Apartments.com, RentRedi, etc)- Maintenance requests and receipts- Accounting for all rental-related expenses (repairs, utilities, etc) The more you treat it like a business, the more helpful you are to your CPA come tax time. 

You can also check their reviews online at Google, Facebook, or Yelp.

Quote from @Diana Teng: Hi all,I think my question above is pretty direct.I'm interested to buy my first rental property, and after doing a brief search I see that there are quite a number of places out-of-state (I live in NY state)  that offer affordable homes that deem to be in hot market areas right now (according to many different articles online). 

Also just look online and steal some ideas...I used to Google Luxury Kitchens and then figure out how to do the same for less $$.You'll be fine with your experience.

We would like to learn about how we should have went about it so that we can purchase more properties, minimize mistakes, and reduce our reliance on corporate life.

Just curious do you find that accessing county records online through the county clerk website works just as well as going in person?

We also tell them that we charge $25 per hole for TV mounts, shelves etc I think that $10 up-front investment has reduced the number of issues by probably 80%.Our walls are textured (sand textured in Milwaukee, orange peel textured in the western suburbs - yes, there is an actual dividing line), so we try to avoid the usual palm-sized patch and fill only the hole without making it bigger, so we can get away without texturing.

I've found deals in local online groups on Facebook, simply asking people for what I want.