This document provides an introduction to small businesses, including definitions, characteristics, types, and importance. It defines a small business as independently owned and operated, with a small number of employees, assets, sales volume, and capital investment. The document outlines the key features of small businesses in developed and developing countries. It also discusses the role of small businesses in the Nepalese economy, noting they employ the majority of the population and are the economic backbone of Nepal. The challenges small businesses face and reasons for their survival in Nepal are also summarized.