This document provides an introduction to digital marketing. It discusses how digital marketing uses electronic media like the web, email, mobile and interactive TV to build customer relationships and capture value. It notes that over 50% of India's population is below 25 years old and 65% is below 35, making the market mobile driven. The document outlines some advantages of digital marketing like rich information, efficiency, reach and price reductions. It also discusses goals of digital marketing, common channels used like websites and social media, and the importance of targeting the right content to the right audience at the right time.