Your journey begins! This chapter explores the basics of machine learning and what tiny machine learning is all about. You’ll learn how it is changing many industries by allowing AI models to run on tiny devices like microcontrollers, sensors, and other Internet of Things (IoT) gadgets. We’ll dive into the challenges and opportunities that come with this new frontier technology and discuss how it impacts industries and individuals. The second part of this chapter breaks down the key concepts and terminology you need to know to understand machine learning. It starts with the basics and covers essential terms like supervised and unsupervised learning, classification, and regression, and how to measure a model’s performance.