For example, who is responsible for snow removal, you or the tenant, how long can they have a guest until the guest is considered a resident there and should also be paying rent, you encouraged the tenant to get renter's insurance because you will not be responsible for any damaged or stolen items, etc.

Since you're only 16 with limited income and capital, traditional lending methods are out of the question to acquire property. 

I am studying for my exam now, and while I plan to do some traditional Agent work, the main focus is for investing in real estate.

For those of us who are long term holders of real estate, very expensive items will come up. 

The tenant dodge for the first 10 days of the month, then said they were moving out.The property appears abandoned, but some personal items has been left.  

Would i be able to put 10%, 20% down and then work with a traditional lender to handle the rest?

White paint will clean it up nicely along with the other items on your list.  

I have few properties that I recently bought with all cash, for roughly $1 million, the appraisal came at $1.5 million. So what would be my best strategy to cash out?I talked with some bank, they will lend 75% of the ...

That in itself is an advantage over a traditional tenant who pays monthly.

I am seeking advice on the items mentioned in the original comment.