This document discusses how to build a career in IoT and Industry 4.0. It provides an overview of key concepts like the industrial revolutions and how IoT fits as the third wave of the internet. It discusses technologies enabling Industry 4.0 like AI, blockchain, and big data analytics. It also outlines the different phases of IoT maturity from monitoring to autonomous optimization. Finally, it provides practical advice on starting an IoT project by focusing on hardware, connectivity, platforms, and applications.