Because I live across the country, that would have cost me a lot to hire an electrician or handyman to buy and install them all.

I have simple-sub ($5.00 a month) meters established at a few of my other duplexes to calculate water usage among my units and automatically calculate/split/bill tenants. 

Done right, college gives you tools to earn a much better living, doing something you enjoy doing, and expands your mind and thought process to improve your critical thinking and reasoning and realizing there's a whole lot to life, more than you'll ever be able to experience in your limited lifespan.2.

I would only do Airbnb if I were an established investor that could survive if it failed.

For those people, establishing a bit of trust or showing you care about their situation can help seal the deal.

Is there a business you can simply push up and increase revenue by a lot to produce the money you want to invest? 

How he solved that challenge was by establishing a network of professionals and like minded people in Real Estate. 

They really do stand out in a neighborhood plus I doubt you could get permits to build in a established area.Much easy to build on a larger plot of land in the boonies, which is where I see most of these.In the end, once you get them looking nice, you could have done a stick built house or even a log cabin if you can harvest materials on your land for about the same or less.

Eliminate debt, establish a budget, and save.

Keys can be given 24 hours or whatever you establish before lease start and when the rent is paid in full.