I drive a Tesla… it’s a really fun car… but has so much acceleration you can get yourself in a dangerous situation if you don’t respect its capabilities… especially as a new driver.  

There are a lot of dangers in lending money.

Now there is danger in that of course 1. you can miss something  2. when you go to resell if the title companies representing the bank or new buyer dont know you and they are not title company prepped deeds they may refuse to insure the next transaction as they may think the risk of title fraud is too great to take it on.  

Sub to for beginners with no real money is very dangerous to a seller full stop. 

Here's what I do....again it may be controversial, but there is such an enormous pool of tenants that have vouchers that I can do this and still have plenty of people...No smoking of any kind.....I don't care if you have a card that says you need "it" for medical reasons.No evictions, ever.No felonies in the last 5 years.No dangerous breed "animals" or pets  and when fully grown the pet can't weigh more than 20 lbs.They will pay for a background check through SmartMove that costs $40.00I don't care what "story" they have, I don't sign the RFTA package until they give me one full months depositI actually don't care what their credit score is because the housing authority pays most of their rent.I don't care about their oncome because the housing authority pays most if not all of their rent. 

I also think that if I can make all of my money back in 4 years with a cash out refinance, what is the danger?

Quote from @David Kanarek: DANGER !!!

You are entering a dangerous area. 

When you analyze a market properly (1% Rules aren't properly), you're analyzing all the properties in that market at the same time.It's even more dangerous for newbies to use any Rule of thumb.Rules of thumb are nothing but shortcuts, which seems to be the growing method of doing anything now. 

You can say a knife is dangerous because it can cut yourself with it.