Take a look at the close.io blog, they helped me figure out how to write some cold emails and helped me make some of my first sales. You should definitely talk to people you know and trust, but take the plunge and reach out to some folks you think would benefit from your product. Also don't be discouraged if you don't get much of a response, I sent 30 emails, had 40% open rate, and only one person respond. Today it's easier as my skills have improved, but be patient and you can do it.