Gen AI · Course

Gen AI: Zero to One

A hands-on path from fundamentals to working Gen AI systems — data, tokenization, Transformers, and the engineering around them. Every lesson is build-first, with runnable code and quick self-checks. Code lives in the companion repo.

Code & notebooks on GitHub

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Data Management

~45 minutes

Phase 0Build

Load, stream, convert, split, and version datasets with a repeatable workflow.

What Is a Token?

5 min read

Concept

How text becomes the integer IDs a model actually reads — and why token counts never match word counts.

Self-Attention, Intuitively

9 min read

Concept

Queries, keys, and values — the mechanism that lets every token decide which others matter.

Putting Order Back In

7 min read

Concept

Attention is order-blind. Positional encoding — sinusoidal and rotary — is how we fix that.