Crash Course offers videos covering many of the topics we have discussed in class. You can watch them all in order, or just a few videos to help you understand topics we are currently discussing. The videos are very fast, so consider watching them more than once, or use subtitles to help you understand the speaker. You need to have access to YouTube to play these videos.
This is a free, online course that offers video lectures and quizzes on World History topics including the origins of man, early civilizations, the origins of Judaism and Christianity, and the Greek and Roman Empires.
This site contains hundreds of powerpoints and other resources on just about any social studies topic you can think of. I use powerpoints from this site all of the time in my classroom, but there are many more that you may find useful or interesting.