This document provides an introduction to the philosophy of digital marketing. It discusses why learning digital marketing lessons is important, as digital is now integrated into daily life. The lessons will cover topics like SEO, content marketing, and growth hacking. The content is designed to be practical with real examples, free tools, and business cases. It encourages the reader that digital marketing is accessible to all as the internet provides a global platform, and that it can be an engaging and measurable field to work in.