My biggest learning point was the podcasts, I was able to drive to work, or be going about my daily routine all the while be learning about real estate.

When people call on that ad, they tell them they are out of town, just drive by the house, peek in the windows, if you like it call back, email me your app with all your personal info on it, and Western Union me the 1st month's rent. 

The materials used in making these drive the quality and the cost;  - Particle board (and there are different grades of this) is the cheapest  - Plywood is better (again different grades)  - Solid Wood is best (and again different types)Water is the enemy of wood in general and cabinets specifically due to humidity and leaks so I prefer solid wood frame with plywood decks / shelves.

There are plenty that are still affordable and have lots of room for growth, including all the ones you mentioned above! 

Do I have to mention any thing about his documents in the contract like Driving License # or professional license # etc?

He has a very good job and great credit but is young and immature so I kind of just want him to go away BUT hate the hassle of having to show the place again (40+ min drive from my house each way), run background checks, etc.What would you do in a situation like this?

Yes family and friends where our driving force to the areas we invested in.

No whiz-bang profits, but fairly steady growth.  

So I just mailed him an introduction letter, and will drive down and visit him in person next week. 

Based on below article, looks like still in growth stage.