This article introduces a series about using ESP32 with Python for IoT projects. The ESP32 is a powerful microcontroller with built-in Wi-Fi and Bluetooth capabilities. It can interact with sensors and control devices, essentially a more advanced version of Arduino. Python, a high-level programming language with a readable syntax, was first released in 1991. It is versatile and used in various fields, including hardware communication. The Internet of Things, or IoT, refers to physical devices connected to a network, usually the internet, to collect and exchange data. These devices can often perform tasks automatically. The combination of ESP32 and Python bridges hardware and software, enabling interactive and connected applications. For example, an ESP32 can read sensor data and send it over Wi-Fi for processing and action. This synergy offers a strong basis for building IoT and other hardware-software projects. This introductory article sets the stage for future articles that will delve into practical examples and theory. The goal is to teach how to make ESP32 and Python communicate effectively.