Small and medium-sized enterprises (SMEs) across Europe are increasingly adopting AI--yet many lack the resources to interpret and implement the complex requirements of the EU Artificial Intelligence Act (AI Act). This practical open access guide bridges the gap between regulation and business reality. Designed specifically for SMEs, the book explains the EU AI Act in clear, actionable terms. It helps organizations identify which AI systems fall under the regulation, determine their risk category, and understand the resulting obligations. Rather than treating compliance as a legal burden, the book shows how it can become a competitive advantage through strengthening customer trust, reducing operational risk, and supporting sustainable business growth. The book includes practical tools such as risk assessment checklists, internal audit steps, transparency guidelines, and examples of human oversight in AI workflows. It also explores long-term governance strategies, including embedding risk classification into development pipelines, aligning ethics with business strategy, and building responsible AI capabilities step by step. Combining regulatory clarity with business pragmatism, this book offers SMEs a roadmap for responsible and compliant AI adoption--without unnecessary complexity.