Web 2.0 is a hot topic. The term "Web 2.0" refers to the next generation of Internet applications that allow the average Internet user to collaborate and share information online. Web 2.0 sites allow anyone to contribute content and to participate with other users in editing and even combining or remixing existing content with other material to repurpose it for additional uses. A distinguishing Web 2.0 feature is the increasing significance of the individual user, as anybody can create and upload text, as well as audio and video, to the Internet. Several thousand Web 2.0 applications have become available in the last few years. These applications are generally free to individuals. This article features various online productivity and collaboration applications that are helpful to both students and teachers in learning and teaching. Web 2.0 can change the way teachers interact with students and how students interact among themselves. The author suggests that anyone who wishes to get started with Web 2.0 begin by exploring the information and sites presented in this article.