Good job with reading and getting educations.

I am still in highschool, and my parents want me to go to college for four years and get a high paying job. i think the best way for me to start out is get into a trade (hvac) and save for about 2 years, i will be 19-20 by then and have enough for my first deal and be able to apply for a mortgage.

I would wait until you have at least 20 % down payment before purchasing another property, unless your main day job can help cushion the expense cost (vacancy, repairs, taxes, insurance etc).

I especially liked, "Have you had any luck in finding an insurance company that will provide you insurance that will kick in in the event your tenants lose their jobs?

I would like to study on my own schedule, considering I work a full time job at the moment. 

First is that it is hard to get ahead if your main job is making someone else money.

Some make it sound like a full time job, I would say I don't spend more than 2-3 hours a week managing his property, even in the harsh winters of Boston.No LLC costs, etc.

Great job starting out so early, I'm sure you will crush it if you keep it up!!!

So the person quits his/her job and has this 6K cashflow per month.

If you are firing the PM because they suck at their job and aren't upholding their end of the agreement, there should be no penalty for walking away.