Our contractor went over to check on progress for us and find a entire side yard dug up, fence ripped out, trees removed and debris everywhere.

However, I have heard horror stories about the homeless that can park out there and the police not coming to assist, gunshots, disrespect for your property, human waste lying around, and drug houses, and more.

How much is the mortgage, rental income, property taxes, insurance, trash removal, sewer use fees, etc.

A property that is not making cash flow is wasting the depreciation benefit because of it's limitations. 

you need to fully work out what is possible with the property you have so that you don't waste money on trial & error. 

If I'm not mistaken I have the right to call the internet company to remove the wiring and patch up the hole they made into my kitchen and if I am charged I can take it out of the security deposit.

So, when something really goes wrong, i.e. when you really need help, all you have done is waste time for their technician to come to find out that they won't cover it. 

I make it short so i dont waste much time i am from norway i have 37k dollars to use the bank will get me loan between 180k and 200k dollars including the 37k any advice buying first property?

You may run into issues renting it and depending on where you live even be forced to remove it.

Or landscaping and snow removal, if that's a thing where you are.Essentially, any cost that affects the day-to-day operations of the property and is necessary to keep the cash flowing is an Operating Expense.