"A Young Lady's Illustrated Primer" is a central and symbolic artifact in Neal Stephenson's "The Diamond Age."

The Primer is an advanced, interactive, nanotech-driven book, and its main properties include: adaptive story-telling, interactive, voice-activated, lieflong companion, teaching practical skills, nanotechnological, encrypted, socially impacting.

The physical body ("the P-shell") embodies physical properties defined in the Personal Primer 23-property roadmap (Hromada, 2018). Shell materials of organic origin are preferred over non-organic ones.