Touniaoba is an online knowledge-sharing community and forum focused on educational course resources. It provides a platform for students and adult learners to discover, share, and exchange online classes, with a library described by the site as containing tens of thousands of courses. Its main education sections cover preschool, primary, middle, and high school learning, as well as courses for college entrance exam preparation and adult vocational education. Subject materials include mathematics, English, science, and other school topics, alongside study advice, exam information, and question-and-answer discussions.

Beyond school courses, Touniaoba hosts resources in areas such as programming, business and product operations, office productivity, design and multimedia, language learning, parenting, and lifestyle. Members can contribute course resources by posting them in the appropriate forum section; submissions are reviewed by administrators, and approved contributions can earn forum coins. The site also offers membership and coin-related features, daily check-ins, and community discussion tools. With its broad range of learning materials and user contributions, Touniaoba serves as a resource-sharing hub for learners and educators.