One thing I wish I did was take NOTES... being a successful landlord means you build systems that you can scale. Have some place to journal for real estate make notes ideas etc. Where can I make this smoother for the future what do i need to prepare draft source create etc... what is my move in process/system/routine what about when a tenant says something is broken? Who do I need in the future for repairs? What records system should I setup?
check out this article also ---- https://www.biggerpockets.com/...
biggerpockets.com/guides/landlord-rental-property-management
Another point... Water I think is the most common property enemy. Rain Water, Flood Water, House Water. - Leaks sometimes - roof leak or drain leak. Leak slowly continuously .... water supply line issue.
Oh yea. Speaking of water supply... Not sure how much you understand so this might be extra but you dont need to be a contractor however you DO need to understand a few basics of physical property 101 helps in knowing who to hire and also what to look for in terms of damage or issues- a house can be divided in three parts...
the bones/structure,
the guts/mechanical (behind the wall stuff that you see during the "rough-in phase" of construction),
and the face or skin/cosmetic aspects (stuff in front of the wall - cabinets, paint, light fixtures, faucet fixtures, flooring etc).
Mechanical parts are HVAC, Electrical, and Plumbing and one of these things is more likely to cause problems while your tenant is occupying the property and can sometimes become an urgent issue. HVAC includes the ductwork, and then the blower, and then the cooling system (Air cooling coils and outside condenser) or heating system (Furnace) or both that heats or cools the air the the blower pushes through the ducts. There are other types of heating and cooling like boiler radiator, mini-split cooling and heat pumps baseboard etc but wont go too far into that) Plumbing is water supply, and then the DWV system or Drain Waste Vent - To drain, pipes need to be vented. I had no idea about that when I started wanting to invest in real estate. See the picture below for what is "behind the walls" These things tend to be behind certain walls in your house and not others, houses generally try to keep anything water related close to each other.
Anyway hope that adds something? Good luck!