Know how modern AI actually works, from embeddings to transformers
Chapter 1 · Start here
Embeddings: Words As Numbers
Discover how AI converts words into mathematical representations that capture meaning
Chapter 2 · Start here
Context Windows: How Much AI Remembers
Understand the limitations of AI memory and why ChatGPT sometimes forgets earlier parts of conversations
Chapter 3 · Start here
Attention: Focusing On Important Parts
Learn how AI decides which words to pay attention to when understanding meaning
Chapter 4 · Start here
Transformers: Processing All At Once
Discover why modern AI is so fast—it reads everything in parallel instead of word-by-word
Chapter 5 · Start here
Pre-training: Learning From Everything
Understand how AI learns general knowledge by reading massive amounts of text from the internet
Chapter 6 · Start here
Fine-tuning: Specializing For Tasks
Learn how general AI models are customized for specific uses like coding, customer service, or medical diagnosis
Chapter 7 · Start here
Why ChatGPT Sometimes Fails: Limitations
Understand hallucinations, bias, and other failure modes—so you know when to trust AI and when not to