Today, surfing and doing transactions on the World Wide Web (WWW) permeate most business and individual undertakings. An enormous amount of human interactions and data exchange are done directly over the Internet. This course aims to provide introduction level knowledge about the Internet, as well as various applications and services running on it, such as e-commerce, e-banking, social networks, location-based services. The wide spectrum materials to be covered include: service models of social network; major underlying technologies and driving forces that support it, including both the technological and business perspectives; obstacles that might inhibit the growth (e.g., security and privacy issues). The legal, ethical and societal aspects of network security and privacy will also be discussed. Key topics includes introduction to the Internet, e-commerce, social networking, internet security, data security, peer-to-peer/sharing economy, location-based services, and digital marketing. Learning activities include lectures, group projects, case studies, hands-on assignment, and tutorial sessions.