This document defines marketing and discusses its major types. It defines marketing as communicating the value of a product to promote or sell it. The major types discussed are digital marketing, internet marketing, affiliate marketing, multi-level marketing, and global marketing. Digital marketing uses electronic means like TV and the internet to advertise. Internet marketing is similar but strictly internet-driven. Affiliate marketing involves sharing revenue between advertisers and websites. Multi-level marketing compensates salespeople for their own and recruits' sales. Global marketing forms international business relationships. The document also discusses the importance of marketing for getting word out, increasing sales, building reputation, and enabling healthy competition.