Learn from people who know how to make money and be profitable. 

Ripping equity from people without them knowing the options is the complete opposite of that. 

Places where home prices are going up fast or where there are always people looking to rent and the income is good are often best.

Attend meetups and meet as many people in RE as you can.

- Do you know any other cool apps that not many people use but are really good?

I think a lot of people are going 2-5% these days.

People are weird....good luck!

Normally I tell people to start small.  

As far as I am aware you can rent by the room in phoenix, I am not aware of any unrelated persons ordinances but you can check with your municipality they are usually starting at > 3 people that is what I believe would limit rent by the room.

Some seem to think people will tamper with them, if they are not individually packed, like you would get at a fast-food restaurant.Thanks in advance,Aaron