Learn artificial intelligence, step by step
Understand how AI works, compare the top AI assistants, and build websites and apps with AI. Read each chapter here, then watch its narrated visual lessons and take the quiz.
What Is Artificial Intelligence?
Artificial intelligence is no longer science fiction. It unlocks your phone with your face, suggests the next video you watch, translates...
CHAPTER 2Types of Artificial Intelligence
"AI" is a big umbrella word. Under it sit many different ideas and techniques. In this chapter we sort AI into clear groups: by how...
CHAPTER 3How AI Works
You do not need advanced maths to understand how AI works. In this chapter we follow the life of an AI system from raw data to a working...
CHAPTER 4Machine Learning and How Machines Learn
Machine learning is the engine of modern AI. There are several ways a machine can learn, just as people learn from a teacher, by exploring...
CHAPTER 5AI Architecture: How AI Systems Are Built
Behind every AI app is a stack of layers, from chips in data centres to the screen you tap. In this chapter we look at that full stack,...
CHAPTER 6All the Kinds of AI Models
There is no single "AI". There are many kinds of models, each built for different data and different jobs. This chapter is your map of the...
CHAPTER 7Generative AI and Large Language Models
Large language models are the technology behind ChatGPT, Claude, Gemini and many other assistants. Understanding how they work will make...
CHAPTER 8ChatGPT, Claude and Gemini Compared
Three AI assistants dominate most conversations: ChatGPT from OpenAI, Claude from Anthropic and Gemini from Google. They are all built on...
CHAPTER 9How to Use AI Effectively: Prompting
The quality of what you get from AI depends heavily on what you ask. Writing good instructions - called prompting or prompt engineering -...
CHAPTER 10Applications of AI in the Real World
AI is changing nearly every industry. In this chapter we tour the most important application areas and look at how individuals and small...
CHAPTER 11Building Applications with AI
You do not need to train your own model to build a powerful AI product. Today most AI apps are built by connecting to an existing model...
CHAPTER 12Building a Website Using AI
A few years ago a professional website took weeks and a team. Today, with AI, a beginner can build and publish a good-looking site in an...
CHAPTER 13Building a Mobile App Using AI
Mobile apps reach billions of people. AI now helps at every stage - from designing screens and writing code to adding smart features...
CHAPTER 14Limitations and Risks of AI
AI is powerful, but it is not magic and it is not always right. Knowing its limits is what separates a smart AI user from a careless one....
CHAPTER 15Responsible AI, the Future and Your Career
AI will shape the coming decades. In this final chapter we look at how to use and build AI responsibly, how governments are regulating it,...