Start by reading the Ultimate Real Estate Investing Guide: https://www.biggerpockets.com/guides/ultimate-real-estate-investing-guide/introduction2.

The longer the tenant stays, the more you collect.I manage 400 rentals and I have only had one animal damage a home more than the deposit would cover.

Our first tenant stayed for 2 years and 8 months, and we've just recently moved in a new couple. 

But by then my wife became a stay-at-home mom and my DTI prevented me from getting larger mortgages. 

I am in a similar situation where I am a first time landlord living in a duplex where tennats will not be staying (eviction, after only 3 months of owning the property).

You have found the right place for a plethora of information on REI.Read Beginner’s Guide to help you get started: http://www.biggerpockets.com/real-estate-investing Good luck on your journey!

It says in the welcome letter they are required to read it and by staying at our cabins have agreed to the rental agreement.  

Staying up-to-date on these laws is crucial to avoid costly legal issues and fines.

She didn't do it blindly, she had both of her sons to teach her and guide her through all that she initially tackled.

Start with BiggerPockets Ultimate Beginners Guide (free).