Online Supplements for Anyone
Whether you have this Peter Stearns' book or not (and he designed the course and helped write the first tests, so it's not a bad idea to have it or use it as a supplement), this is a fantastic site available to anyone. There are terrific summaries of each chapter, practice questions, links to other websites, flashcards, essay prompts and more.

World History Resources
Whether or not you use this text, "Patterns of Interaction," you can still use their resources online. There are quiz questions, puzzles, web links, in depth articles on many many topics and primary documents. It really is exhaustive. Click here to get there and once there, select "high school" and then your state and "go."