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ContentsFront matter

How to read this book

Software wraps your words in instructions, a language model predicts a reply and, if it needs to, asks for tools to act. Here are the parts, one at a time.

Think of this as learning the parts of a car before you shop for one. People hear words like tokens, prompts, models and harnesses without knowing which part is which, so it is hard to know what to ask. Product names appear only as examples of a part.

  • Turn the page with the arrow keys, the Back and Next buttons at the foot of each page, or a swipe on a phone.
  • The contents are a tap away at the top of every page, with a ✓ on the pages you've read.
  • A small number after a sentence opens its source. Each page lists its notes at the foot; Appendix D has them all.
  • Go deeper boxes hold the extras: facts, tables and further reading. Skip them on a first read.
  • Dotted words lead to the parts list, a plain-English glossary.
Your place is kept only in this browser, so you can stop at any page and pick up where you left off.

An introduction, not a reference: products and terms change often, so for any product's current features, prices or terms, check that company's own documentation.

How to read this book · page 1 of 1

Turn pages with the ← and → keys.

Cite this page

Using this book

© 2026 Steve Sparks. All rights reserved. You're welcome to quote short passages and cite any page, with a link back. To reuse diagrams or larger parts, ask through GitHub.

Quoted material and figures from other sources remain their owners'.