Located near the University of Notre Dame, while I lived there for two years, I would short-term rent it for games and events and then stay at a family member's house.

i once heard on a podcast about this, that the guy even included 'how to know if your lightbulb blew out and how to replace it.' it's not common sense to many kids who lived at home up until then. this will reduce headaches for you. how to know if a toilet is clogged and how to unclog it, what to do when smoke detectors go off from cooking...

You also have to have the intention of living in it for 12 months. 

I own a property where I rent out the lower apartment while my wife and I live in the upstairs one.

I used to go to Beaver County ACRE back when I lived in Beaver County it was a pretty good group probably worth looking into. 

New Home: I would need to dump some of my brokerage accounts for the downpayment(so some capital gains taxes would need to be paid to finance the downpayment on the new house) or if I sold our "current residence(2nd home)" I wouldn't need to.I understand the tax incentive of selling within 5 years of living there for 2 years, however, the cash flow seems larger then what I would get taking the money and investing in new RE in the future. 

They know that with very little exception, it’s the primary use of the money that’s important, not who lives in the home.

All the Realtors that live there are driving Uber now or something.

You'll live in one unit and rent out the rest.

However, if you are starting out, especially with lived-in homes, it would be wise to have a home warranty.