The document summarizes the journey of Aris Cahyadi Risdianto from a network beginner to a network programmer with the help of open source networking. It outlines his career path starting as a student learning networking fundamentals. It then details his roles as a network engineer, administrator, and current work exploring open source SDN and NFV technologies. The document also provides a basic introduction to open source networking, including common project forms and examples uses cases from Google, Facebook, and AT&T. It notes that while individuals may not have the scale of large companies, open source allows for collaboration and contributing solutions through testbeds and research.