In the era of digital manipulation, critical thinking skills become vital. The study demonstrates how technologies affect perception and teaches how to analyze information to counter disinformation and make informed decisions. The author’s work illustrates how modern technologies change our understanding of reality and our ability to analyze. The book shows that critical thinking is an important tool in the fight against manipulations and disinformation in the digital world. Descriptions of artificial intelligence technologies, blockchain, cryptocurrencies, and network structures are given in simple language, including historical context from the pre-digital era. In a world where digital technologies are everywhere, it’s important to learn how to work with data responsibly and consciously. The book is aimed at those who want to understand the complex aspects of the interaction between people and technologies and be ready for the challenges of a rapidly changing world.