An interactive AI tutorial I wrote for my 11-year-old
Explains transformers to an 11-year-old with interactive playgrounds better than most courses.

Valuable content, but Show HN is for shipped code, not books.
Founders, marketers, and writers seeking copywriting fundamentals
It contains only the fundamental mental models I've used as a copywriter for over a decade. No case studies or anecdotes to fill the pages.
I made 44 diagrams to make some of the ideas more clear, using Excalidraw (I love it, would recommend it).
It's relevant to founders and people who need to communicate about what makes their work/software interesting.
It answers questions like:
- How do copywriters know they're saying something engaging?
- How do copywriters continuously keep building relevant content for the same audience?
- How do copywriters plan to be seen and heard on the noisy internet?
You can read the first chapter here on my website: https://www.nair.sh/guides-and-opinions/marketing-under-pres...
Oh, also the cover image is a painting from over 110 years ago: 'Sailor med kikkert' by Norwegian painter Martin Aagaard. Link: https://commons.wikimedia.org/wiki/File:Martin_Aagaard_-_Sai...
Explains transformers to an 11-year-old with interactive playgrounds better than most courses.
Teaches kids recommendation algorithms with adaptive navigation modes like Missions and Map.
400-page Codex CLI manual covering MCP and hooks before official docs catch up.
Implement transformers and LLMs from raw math in Python, Rust, TypeScript, and Julia.
Pattern guides for Playwright tests, but this is context-injection—a known workaround, not a platform shift.
Well-intentioned guide, but it's a Markdown book—not a product or interactive tool.