This report provides a comprehensive overview of cryptocurrencies, delving into their fundamental concepts, technologies, and various types. It begins with an introduction to cryptocurrency as a digital currency secured by cryptography and built upon blockchain technology, highlighting its decentralized nature and immunity to central authority control. The report then explores the node link tree and user personas, illustrating how cryptocurrencies are used and who uses them. The core of the report focuses on different types of cryptocurrencies, including Bitcoin, Litecoin, Ethereum, Ripple, Bitcoin Cash, Ethereum Classic, Zcash, and Stellar Lumen (XLM), detailing their characteristics, differences, and functionalities. The report also covers new IA, wireframes, and graphic design aspects, and it concludes with a summary of the key findings and references to cited sources. This analysis provides a valuable resource for understanding the evolving landscape of digital currencies.