Christian Fuchs. 2024. Social Media: A Critical Introduction. London: Sage. Fourth edition. 448 pages. More info on the English edition (how to order a review or inspection copy, etc.): https://fuchsc.net/books/social-media-a-critical-introduction-4th-edition/ German edition: https://fuchsc.net/books/soziale-medien-und-kritische-theorie-2/ Published in December 2024, the fourth edition of Christian Fuchs’ textbook “Social Media: A Critical Introduction” gives an introduction to the use of Critical Theory for the analysis of the Internet and social media in society. Contents I. FOUNDATIONS 1. Social Media: A Critical Introduction 2. What are Social Media? 3. Big Data in Digital Capitalism 4. The Power and Political Economy of Social Media II. PLATFORMS 5. Google: Good or Evil Search Engine? 6. Facebook and WhatsApp: Surveillance in the Age of Fake News 7. Influencer Capitalism: Reified Consciousness in the Age of TikTok, Instagram, YouTube, and Snapchat 8. Elon Musk’s Twitter and the Colonisation of Political Communication on Twitter: Political Economy, Digital Democracy, and the (Digital) Public Sphere 9. Right-Wing Authoritarianism and Digital Fascism on Social Media 10. TikTok and China’s Political Economy in Global Capitalism III. FUTURES 11. Towards Truly Social Media