The library

Practical books for real life

Every title is a system you can actually follow, grounded in real science and decades of keeping things running under pressure. Browse by what you need today.

Newest

Agents You Can Leave Alone

Harness engineering for AI systems in production. Written in public on Leanpub, and also on Kindle.

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Resilience & self-reliance

Be ready, without the bunker

From a retired Army engineer: calm, capable self-reliance for ordinary families. Start with the off-grid survival book or the free emergency water calculator.

The Off-Grid Survival Handbook

The Off-Grid Survival Handbook

Survive, thrive, and reach true freedom with self-sufficiency, energy independence, and resilient living.

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The Off-Grid Mindset, extended edition
Extended edition

The Off-Grid Mindset

The complete 183-page handbook: resilient solar power, clean water, safe food, and security, step by step.

PDF + EPUB direct, €29
The Off-Grid Resilience Toolkit bundle
Bundle · save

The Off-Grid Resilience Toolkit

Three resilience books in one discounted set, the fastest way to a complete plan.

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Money & faith

Financial freedom, without the guilt

Honest, step-by-step money systems, including a faith-based path.

Financial Freedom Roadmap

Financial Freedom Roadmap

Step-by-step money management for single parents: budgeting, debt payoff, emergency funds, and building wealth on one income.

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Biblical Financial Principles

Biblical Financial Principles

A 12-week Bible study to master God's plan for money, debt, and generosity, with grace and practical steps.

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Faith and Finance Freedom bundle
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Faith & Finance Freedom

Biblical principles for financial and emotional peace, bundled into one journey.

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Mind & wellness

Calmer days, minutes at a time

Science-backed mental-wellness systems that fit a real schedule. Start with the gratitude reset book, five minutes a day.

The 90-Day Gratitude Mind Reset

The 90-Day Gratitude Mind Reset

A science-backed writing system to rewire your brain for calm, clarity, and lasting wellness, five minutes a day.

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CBT for Seniors

CBT for Seniors

A 90-day, text-based cognitive behavioral therapy workbook for calmer, clearer days in later life.

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Pets & grief

Gentle healing after loss

Guided, compassionate workbooks for pet parents, before and after goodbye.

After My Pet's Passing, for cat owners

After My Pet's Passing: Cat Owners

A 90-day guided grief workbook for cat owners, science-backed prompts and gentle emotional support.

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After My Pet's Passing, for dog owners

After My Pet's Passing: Dog Owners

A 90-day guided grief workbook to heal after the loss of your beloved dog.

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The Confident Pet Parent

The Confident Pet Parent

Calm, practical guidance for raising a happy, healthy, well-loved pet.

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Healing Hearts pet loss bundle
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Healing Hearts

A guided journey through pet loss and renewal, the workbooks bundled together.

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Also from Marius

Family & relationships

The Stress-Proof Minimalist Homeschool Planner

The Stress-Proof Minimalist Homeschool Planner

Calm, low-stress planning for minimalist homeschooling families.

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Cleopatra's Secret Technique

Cleopatra's Secret Technique

A modern guide to tantric love, intimacy, and connection, grounded in respect and real practice.

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For your work

Giving an AI a Job: The Workbook

My one course outside self-help. From my day job as a Python and AI engineer: how to hand an AI system a real task at work, make it safe enough to leave alone, and know what it costs. Self-paced, in text, with a self-check after each lesson.

See the course on Leanpub

Also for your work: Agents You Can Leave Alone, a technical book on harness engineering for AI systems in production.

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