The document introduces microcontrollers and how to build an Internet of Things project using a Particle Photon microcontroller. It discusses connecting microcontrollers to the internet, controlling things with code, and connecting sensors and actuators to microcontrollers. It provides an overview of microcontrollers, the Particle Photon, and shows examples of connecting Neopixel lights and a servo motor to the microcontroller. It explains how microcontrollers use pins and pads to connect power and transmit data and code. The goal is to give the reader a starting point and superpower to solve problems using technology.