The internet has undergone a remarkable metamorphosis since its inception. From the static web of the early days (Web 1.0) to the interactive and social web (Web 2.0), and now to the decentralized, intelligent, and immersive web (Web3), the evolution has been nothing short of astounding. This radical transformation has ushered in a new era in the digital realm, one that promises to reshape how we learn, communicate, transact, and interact with the world. Decentralizing the Online Experience with Web3 Technologies offers an exploration of the Web3 era, a transformative phase in the evolution of the internet. Beginning with the foundational understanding of Web3's core concepts, technologies, and tools, readers embark on a journey through the driving forces fueling its growth. The book demystifies blockchain technology, elucidating its basics and the practicalities of wallets and transactions. It delves into the world of cryptocurrencies, particularly Ethereum, and explores the disruptive potential of Decentralized Finance (DeFi). There are also chapters dedicated to emerging phenomena like Non-Fungible Tokens (NFTs), the Metaverse, Decentralized Autonomous Organizations (DAOs), and smart contracts, revealing their impacts on art, entertainment, governance, and automation. Altcoins and oracles expand the scope of this exploration. The practicality of Web3 comes into focus with discussions on Web3 services, applications, use cases, benefits, and challenges. This knowledge empowers a diverse audience, from students to professionals and researchers across information technology, business, education, media, social sciences, and humanities. Concluding with a glimpse into the future of Web3, this book is a guide to navigate the digital world, preparing readers for a world where decentralization, blockchain, and digital innovation revolutionize our online existence.