The certification requirements for flying drones (unmanned aerial vehicles) might seem disproportionate to some operators. But there’s no need to fret FAA interaction.
The Gleim Remote Pilot FAA Knowledge Test Prep book offers an easy, fast, and affordable way to prepare for and pass the knowledge test and also the recurrent training test for unmanned aircraft.
The book is easy to read and understand and includes outlines at the beginning of each study unit that presents the material you’ll need to know to answer all examination questions. You can also examine hundreds of example FAA questions.