Still decide first what you are investing in, then speak to a mortgage broker (not a bank as they follow conventional guidelines and usually don't offer DSCR based loans) for best asset based loan products for your asset class.

With one duplex, it should be about 1 or 2 hours a quarter.John Hyre has a pretty good class on how to set up your accounting. 

For my C-Class rentals I do:-3.5X earnings-No prior evictions-625 credit score-1st month's rent and security deposit-No smoking or vaping on the property-Pets depends.

Start with podcasts and listen to the first dozen or so episodes of the following: Mobile Home Park Mastery, Mobile Home Parks in Real Life, & Mobile Home Park Investors.That should give you a decent knowledge foundation to at least begin understanding the asset class and get you asking the right questions. 

Also your finishing work unless you are a natural will look less than professionalThe way to not get taken advantage of is to have multiple quotes, detailed contracts, and to do your homework on construction.Construction projects are as high risk, high reward, as D class inverting.

(This is about taxes)You need a Zoning Permit for Visitor Accommodation:To rent your home for stays of 30 days or fewer.If the property is not your primary residence.Housing requirementsSmoke alarms must be installed:In each bedroom.In the hallway in the immediate vicinity of the bedrooms.On each floor of the home, including basements.Carbon monoxide alarms must be installed:Within 15 ft. of the entrance to every bedroom or within 15 ft. of a bed in sleeping areas if there isn’t an enclosed bedroom.Centrally on a wall or the ceiling, but not directly in front of a door to a bathroom or within 5 ft. of a cooking appliance.Under the installation requirements for smoke alarms if they are combination smoke and carbon monoxide alarms.You can’t post signs for lodging on your home.The home can’t be occupied by more than three people (including the owner and renters) who aren’t related by blood, marriage, life partnership, adoption, or foster-child status.You cannot change your house so that it no longer resembles a private residence.Information you must provide your rentersRenters are only allowed to have guests between the hours of 8 a.m. and midnight.You must tell renters the trash and recycling collection days and any trash disposal rules and regulations.

Long term Hold A class location.

This is the fundamental problem I have with Wall Street who takes too much fees off the hard-working efforts of the middle class.

Check out the version with class tracking that allows you to associate each transaction with a particular property.

They have a wide range of topics and tons of classes related to REI.