If you fly a drone for any commercial purpose in the United States, the FAA requires you to hold a Part 107 Remote Pilot Certificate. This page walks through who needs it, how to get it, and how Part 107 Trainer prepares you for the knowledge test.

Recreational flyers (purely for fun, no business purpose) are governed by the Recreational UAS Safety Test (TRUST) and don't need a Part 107 certificate. The moment you fly for compensation, work, or any furtherance of a business, including unpaid social-media content for a company, real-estate listing photos, roof inspections, or mapping, you need Part 107.
The knowledge test is the only step you have to actively prepare for. The other steps are paperwork and a background check. We focus on getting you ready for that one test on the first attempt, saving you the $175 retest fee and the wait.
$79 lifetime access · Pass the knowledge test · Get certified