The second edition of Digital Literacy provides a highly focused exploration of key critical concepts in understanding digital media in a clear, engaging, and accessible way for an introductory audience. This updated edition explores a variety of approaches to digital literacy, including prescient work by media theorists, the historical influences of legacy media, the contemporary transformations of the digital environment, and the way our communication ecology is constructed. The book argues for an understanding of the changes in traditional media, the rise of Big Tech, and the challenges these pose to privacy and to democratic ideals. Important themes explored in chapters across the book include digital identity, the internet as infrastructure, the web as a collaborative tool, and domestic and global digital divides. The new edition also explores digital literacy and the pandemic, as well as the growing body of research around the effects and impact of the digital technologies we use every day. Also included are useful Applied Skills Appendices outlining core areas of digital practice. The text is an ideal resource for students and scholars of mass communication, media literacy, digital information literacy, and digital technology courses, as well as for all those wanting to know more about the deep on-going impact of communication technologies on our lives.