Claude Code: Definitive Guide for 2026
From Starter to 10x Pro

The book that closes the gap between what Claude Code can do and what your team is doing with it.

Curated from the seventeen Code with Claude London 2026 talks. Sorted into a learning arc from starter to 10x pro. Fully annotated with diagrams, handouts, and a companion courseware site.

157
pages
17
chapters
33K+
words
50+
diagrams
Claude Code, Definitive Guide for 2026 cover

Why this book exists

The capability curve is steep and getting steeper. Adoption is on a linear track. The book closes that gap with a learning arc that takes a working engineer from "first session" to "running this at 10x productivity."

Reason 1

The talks are scattered

Anthropic posted seventeen talks across the Code with Claude London conference. Watching them all takes eight hours and gives you no notes. This book is the curated, sorted, annotated version.

Seventeen sources
Reason 2

The harness matters as much as the model

The biggest performance gaps between teams running Claude Code come from how the harness around the model is set up, not from which model they picked. The book treats the harness as a first-class subject.

Six layers + subagents
Reason 3

Operational, not aspirational

Every chapter has a specific takeaway, a diagram, and a pointer back to the source talk. The 30-day adoption plan at the end is something you can run with a team starting Monday.

30-day plan included

What's inside

Five parts, seventeen chapters. Seven deep chapters from the fully-transcribed talks, ten companion briefs pointing at the rest.

Part 1

Foundations

  • The State of Claude Code in 2026
Part 2

Operating Claude Code

  • Picking the right model
  • The prompting playbook
  • The thinking lever
Part 3

Building agents

  • Memory and dreaming
  • Managed Agents
Part 4

Real-world deployments

  • Building signals that trade themselves (worked finance case)
Part 5

Companion talks

  • The capability curve
  • What's new in Claude Code
  • Stop babysitting your agents
  • Designing with Claude
  • Claude on Google Cloud
  • Analytics harness
  • Lovable vibecodes
  • Legora legal agents
  • Enterprise panel
  • Spotify devex

Everything that ships with the book

The book is the spine. The handouts, the course, and the source transcripts make it a full kit.

The book in PDF

Print-ready A5, 157 pages, page numbers, table of contents, brand-matched diagrams throughout. Ships as a single 54MB PDF.

The book in HTML

Same content as the PDF, restructured for reading in a browser. Sidebar table of contents, light/dark/system theme, mobile-friendly, print stylesheet.

Eight A4 handouts

Single-page printable summaries: the six layers, model selection, the prompting playbook, the thinking lever, memory and dreaming, Managed Agents, the spec workflow, the 30-day plan.

The companion course

Interactive courseware with three tracks, sixteen lessons, Q&A and quiz per lesson, two interactive widgets. Builds on the book's foundations.

Companion articles (NEW)

Eighteen talks rendered as long-form articles. The seven deep talks each got a full trifecta (Medium, Substack, LinkedIn). The ten companion talks each got a single Substack-length piece. Plus a trifecta for the cccfg tool. 34 pieces total.

cccfg — config explorer (NEW)

A keyboard-driven TUI plus complete reference of every Claude Code config surface. 499 entries: every env var, every settings.json key, every CLI flag, every slash command, every hook event. With a cookbook.

The source transcripts

The seven full transcripts that became the deep chapters. Useful if you want to read or search the source material directly.

The links

The original seventeen YouTube videos that the book is curated from. Every chapter points back to its source talk.

About the author

Marco Kotrotsos, thirty years of IT experience now focused on practical AI deployment. Works hands-on with companies to turn AI potential into measurable business outcomes.

Publishes the Autocomplete newsletter on Substack and Medium covering practical AI for practitioners and decision makers. The book is curated from the conference talks plus material from Marco's own client deployments.

acdigest.substack.com · Medium / Autocomplete