Book excerpt: On the Social Web, people share their enthusiasms and expertise on almost every topic, and based on this, learners can find resources created by individuals with varying expertise. Through this trend and the wide availability of video cameras and authoring tools, people are creating DIY resources and sharing their knowledge, skills, and abilities broadly. While these resources are increasing in availability, what has not been explored is the effectiveness of these resources, peer-to-peer teaching and learning, and how well this content prepares learners for professional roles. Practical Peer-to-Peer Teaching and Learning on the Social Web explores the efficacies of online teaching and learning with materials by peers and provides insights into what is made available for teaching and learning by the broad public. It also considers intended and unintended outcomes of open-shared learning online and discusses practical ethics in teaching and learning online. Covering topics such as learner roles and instructional design, it is ideal for teachers, instructional designers and developers, software developers, user interface designers, researchers, academicians, and students.