I started simple buying a turn key, the next purchase was done with a light rehab to learn a little more. 

I can then move to appliances, LED lighting, etc. 

I also state that tenants are responsible for changing their own light bulbs.

Windows trade light for energy efficiency.

You also don't want them pulling up the floor when they move out, which occurred to a client of mine with light fixtures.Just make sure everything is written and clear for the future.

I would also suggest an exhaust fan that would turn on when you turn on the lights or put a separate switch for it possibly time delay switch that way the fan would run for 30 minutes or longer.

They easily conceal deteriorated original ceilings and it's much easier to install new lighting above a drop ceiling than above a crumbly plaster or tin ceiling.

I have always wanted to show the home in its absolute best light come time to sell, but it's a feeding frenzy out there and having a buyer lined up through the build phase would be great.

So my advice to you is, prepare as much as you can, but more importantly just get out there and do it.With that being said, things like tenant screening, lease agreements. and financing are some things that they talk about on the podcast as being some things you don't want to take lightly. 

They didn't know or care what we were doing when we were playing outside for hours until the street lights came on.