The FAA has ruled that drones are not toys. Please check out the website to make sure you are in compliance.
Registering your drone online is only $5 if you fall under the FAA's new guidelines, should your drone weigh between 0.55 lbs (250 grams) and 55 lbs.
Register your UAS: https://registermyuas.faa.gov/
Get the app: https://www.faa.gov/uas/where_to_fly/b4ufly/