Most faculty think of studying as a solitary activity, especially in an online environment where students cannot simply set a time to meet in the library. But there are a variety of collective annotation systems that allow student collaboration in understanding course material. These systems allow users to post comments on texts, websites, and videos for others to see. With them, faculty can allow students to annotate course resources as they study for others in the class to see. These could be summaries of the arguments, questions, or comments about the issues covered.