For up to date safety and licensing information click on the following links.
1. FAA Drone Zone- https://faadronezone.faa.gov/#/
2. Federal Drone Registration - http://federaldroneregistration.com/
3. FAA (Federal Aviation Administration) UAS rules and regulations -https://www.faa.gov/uas/
4. B4UFLY app - https://www.faa.gov/uas/recreational_fliers/where_can_i_fly/b4ufly/
Recreational users who only fly their drone for fun, now have an improved app – B4UFLY – to help show where they can and cannot fly with interactive maps.
5. Airmap provides users with interactive maps and communication tools to help deconflict airspace and safely follow FAA regulations for UAS flights. https://app.airmap.io
Also here are two other resources:
1) UAV Facts Press Release by NAAA
2) TBYL Visability Flight Test Report - Qualiitative Evaluation of Unmanned Aircraft Visability during Agricultural Flight Operations