The document outlines how to become an independent mobile application developer, detailing essential skills, tools, and platforms for development across various devices like iPhones, Androids, and Windows phones. It emphasizes the importance of starting with familiar platforms and encourages utilizing available resources such as virtual machines for cross-platform development. The text also covers the different career paths in this field, including freelancing and working for established companies, and highlights the significance of networking and learning from industry leaders.