My application for a LLC has been approved for a company that will do drone photography. The LLC of course is just an incorporation limiting liability. My question is this; I'll need to begin advertising locally in a small paper. There is no law or regulation that prohibits flying a drone for business purposes, I have checked. Obviously, you need to follow existing state and local laws besides the FAA quidelines along with National Park guidelines. Therefore, should I advertise or start by word of mouth which is more time consuming and possibly not as effective?