For reasons of just trying stuff out rather than for utility, I have a set of Python scripts to generate books from their titles alone using an LLM. There are hundreds of similarly titled projects on github. This weekend I generated a new book, "A Tinkerer's Introduction to Claude Code". I thought it would be fun to use a Claude model for that, so that's what I've done. (IHMO, Gemini is better at writing and cheaper for that purpose as well.) The book is dull, full disclaimer here, but it has a few bright moments. Not least,

"Set aside time—perhaps one small task per session—where you write code unassisted. Treat it like exercise."