Chris Guillebeau's The $100 Startup model outlines a framework for launching, small, low-capital, or "micro" businesses by utilizing existing skills, emphasizing a simple, action-oriented approach. It focuses on creating valuable, often service-based, offerings, identifying paying customers, and implementing direct, often free or low-cost, marketing strategies.
You can learn more about this approach by reviewing the full text from the Loyola College Digital Library or by visiting SoBrief's summary of the book's key concepts. Book Summary – The $100 Startup (Chris Guillebeau) The $100 Startup Model