The emergence of Metaverse, NFTs (non-fungible tokens), and Web 3.0 technologies has created a new ecosystem for digital content ownership and online interaction. This book chapter aims to explore the applications of this new paradigm by analyzing the technical, economic, social, privacy, and security aspects of Metaverse, Web 3.0, and NFTs. The book chapter first presents a comprehensive overview of Metaverse, including its applications and challenges. It then discusses the role of NFTs in Metaverse and how they can facilitate ownership and monetization of digital assets. It then discusses that Metaverse and NFTs have the potential to disrupt existing business models and create new opportunities for creators and consumers alike. This book chapter explores the combination of Metaverse, NFTs, and Web 3.0 and presents an architecture that integrates all three. Furthermore, the paper discusses social implications of Metaverse and NFTs, including issues of identity, privacy, security, and governance. It further discusses that the decentralized nature of Web 3.0 technologies presents both opportunities and challenges for creating a fair and equitable Metaverse ecosystem. Finally, book chapter discusses the current trends and future of Metaverse, NFTs, and Web 3.0 which has potential in shaping the future of online interaction and content ownership.