Practical Handbook of Microbiology, 4th edition, edited by Lorrence H Green, offers a clear and concise overview of microorganisms for both beginners and experienced microbiologists. This comprehensive resource is designed to benefit a diverse audience including trained microbiologists working in specific areas, individuals from other disciplines who utilize microorganisms as tools, business professionals assessing investments in microbiology-focused companies, and emerging occupations requiring practical microbiological knowledge. The book covers fundamental aspects of classical microbiology alongside cutting-edge topics such as genomics. It delves into the realms of disease-causing bacteria, bacterial viruses (phages), and their potential use in treating diseases, with expanded coverage of extremophiles. Additionally, it explores comprehensive antimicrobial agents, including detailed chapters on antifungals and antivirals. This edition is an essential reference for anyone interested in gaining a solid understanding of microorganisms and their applications.