This book is first part of the 3 volume set focusing on basic and advanced methods for using microbiology as an entrepreneurial venture. This book deals with the concept of entrepreneurship skills for production, cost-benefit analysis and marketing of vaccines, diagnostic kits, biofuels, biogas, organic acids, plant nutrition enhancer, biofungicides, molecular products from Microbes-Taq polymerase, restriction enzymes and DNA ligase. Chapters cover the applications of microorganisms in small and large scale production to achieve a sustainable output. The book provides essential knowledge and working business prools for Enzyme Industry, Pharmaceutical Industry, vaccine production etc. This book is helpful to graduate students, research scholars and postdoctoral fellows, and teachers who belong to different disciplines via botany, industrial microbiology, pharmaceutical and biotechnology, molecular biology. Other two volumes are focused on food and agriculture microbiology.