Items 1 thru 3 on this page are the study materials directly from the FAA. They will prepare you for the FAA knowledge test to obtain your Part 107 drone certificate.

Item 4 will bring you to the FAA Youtube Channel. These videos are awesome for learning about airspace and safety.

Items 5 & 6 include some more great information in regards to drone operations and safety.

oRemote Pilot Study Guide

How to read a sectional chart

Pilots Handbook of Aeronautical Knowledge

FAA Webinars for drone pilots  (Awesome videos for Drone pilots)

Introduction to Part 107 rules, etc.    Provided by AOPA

Best Practices when it comes to Drones & Privacy