They follow rules, pay rent on time, and have had no troubles with me or any of their neighbors.The father says that their 20 something year old son had run-ins with the law when he was a teenager and is currently "getting his life together".  

Renters holding 40 person parties (HOA not pleased), renters who call about a light bulb out and demand someone fix it now or face a bad review, renters screwing up the TV connections - even a couple renting a home for a teenage party that resulted in a bloody bedroom. 

Another good one, especially for kids that are teenagers: The Richest Man in Babylon.

@Kenneth Huddleston  I admire the fact that it seems you have thought about your career and future, which is hard to come by these days for teenagers, so kuddos to you!

This is assuming buyers in the area are families with smaller children rather than those with teenagers or those with no children.

I have been fascinated with real estate since I was a teenager so all areas of the industry interest me, especially residential.

Identify "bargain" listings by calculating a price per sqft that is below average for each zip code, keywords in the description (motivated, distressed, etc) You'll need some tech experience yourself, or find a teenager.3.

They want to live close to work and high school for teenager. 

How do you keep vandals out or teenagers who think destroying someone else's property is fun?

You are not the only one in a bad spot because of stuff that happened at a young/teenage year.