A Great Class Teacher Site for AP World
This is a great site, especially if you are in the first few years of teaching AP World. It has nice overviews of each topic, review questions, links and even a section of how to write DBQ free responses.

Real Player

This is a follow up on the earlier post about embedding videos into a PowerPoint - if you use the new version of Real Player, it will allow you to download videos from sites like YouTube (or any other website that streams video). Real Player has a pop-up button that makes it very easy to download with one click - it's a neat feature that allows you to save videos from the web, especially since sites like YouTube are blocked by most filtering software in the schools. If you don't have Real Player, you can go here to see how to convert a youtube.com video.

Spark Notes
Here is another review site. You do have to sign in with an e-mail, but you can take a 30 question AP World test and it will give you the answers and tell you the areas in which you are weak.