Make sure you build a team of your CORE 4 in whatever state you invest in such as getting a reliable realtor, contractor, property manager, and attorney.

Some areas have specific departments or webpages dedicated to housing or zoning regulations that can provide detailed information.Another effective approach is to connect with local real estate agents or property managers who specialize in short-term rentals.

(e.g. condition, location, size)2) The marketing / sales procedures are inadequate (e.g. no advertising, unresponsive manager)3) The asking rent is too highThe reasons a house won't sell quickly are similar.  

I had my fare share of financial modeling and asset management and can say I know how to analyze deals and asset manage very well.But, I was not too involved in the closing phases of the deals (lawyers, reports, debt placement, contract negotiations, parts of the DD...) so I lack knowledge in those parts, which I make up for in reading ton of materials and listening to podcasts.• After that I worked for three years as a management consultant at McKinsey where I sharpened my business acumen, problem-solving, storytelling, and presentation skills.

Some features include: list building, a CRM, marketing, task management, and much more. 

You can hire an operator to manage the sampling, sludge collection, and forms to file quarterly, for around 4-600/mo (again depending on size). 

I manage large commercial and industrial properties now for my employer, I am a facilities manager for a large utility company in my area.  

You may find out you don't enjoy it at all, or that you're not good enough to manage it and can't afford a property manager.

I am here because I'm interested in being a passive real estate investor and it would be a dream to manage my own portfolios of rental properties.

House hacking will also give you some personal "property management" experience.