Flip Without Money

You can ask Northwood Realty if there's any way you can buy that house without any money.  But I might ask -- if it's for sale now for $30,000 and nobody's buying it, what makes you think that after you own it, you can find a buyer who will pay more than that?
If you really want to be a real estate investor, start by going to the library and reading a few books on beginning investment.  You'll learn that it takes study and hard work. "Some tips" won't be enough to set you up in business.