Whether you are flying for fun or profit there are basic guidelines that all drone pilots must abide by. These are just a few general guidelines. Ample information can be found at the following sites.
Fly at or below 400 feet above the ground or 400 feet above an object
Keep your drone within line of sight
Never fly near other aircraft, especially near airports
Do not fly in restricted air space. Check before you fly. https://kittyhawk.io/ or https://www.arcgis.com/
Never fly over people that are not involved in the shoot.
Never fly over stadiums or sports events.
Never fly near emergency response efforts such as fires.
Perform a safety check prior to every flight
checking the drone and the surroundings.
Never fly under the influence.
Use common sense at all times