Official AP Sites:
The Official AP World History Course Guide - Everything I am supposed to teach you.
Teacher Generated Sites:
AP Worldipedia - Teacher Wiki page with everything broken down by Unit Key Concepts.
Freeman-Pedia - Benjamin Freeman's AP World Wiki Page - Lots of great visuals - broken down by Unit Key Concepts
Teacher Oz (Mrs. Osborns Review Page) - Mostly Links to the most popular / best review sites.
Crash Course Videos:
Crash Course Study Skills - 10 Videos on Everything from Note Taking to Managing Test Anxiety
Crash Course World History - The Original 42 John Green World History Videos
Crash Course World History 2 - 30 More John Green Videos on World History
Crash Course The History of Science - 7 Videos Focusing Solely on Science and Thinkers
Crash Course U.S. History - 47 Videos All on U.S. History (Great for Reviewing Units 4-6)