Ebooks & Guides — RJ Tech House

The Stack

Practical playbooks for money, tech, and the moves in between. Each title is one layer — read it, act on it, add the next.

09 Titles available now
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2026 Current edition

The catalogue

How to Use AI as Your Personal Life Assistant

By Reejoys · RJ Tech House

What this book is

There is a particular kind of tiredness that has nothing to do with sleep. It is the tiredness of holding too many small things in your head at once — the appointment you have not booked, the email you have reread four times, the skill you keep meaning to learn. None of it is hard. That is what makes it exhausting.

This book is about a tool that is unusually good at closing those loops. Everything in it works today, with the free or low-cost versions of tools that already exist, on a phone, in a browser, with no technical skill at all. It covers organising your day, work, money, learning, health, family, travel, decisions, and safety — and one full chapter on where AI gets things confidently, fluently wrong.

What you get

  • 161-page designed PDF, readable on phone, tablet, and print
  • 12 chapters plus three bonus sections
  • 100 copy-and-paste AI prompts you can use immediately
  • AI personal assistant worksheets
  • The 15-minute quick start guide
  • Daily, weekly and monthly routines, plus 7-day and 30-day plans

How it is written

Educational only, never professional advice. AI tools make mistakes and state wrong facts with confidence — the book is explicit about this and devotes a full chapter to safety, privacy, and verification. Not a substitute for a doctor, lawyer, accountant, or emergency service. Verify anything that matters against a primary source before acting.

Inside the book

Core Chapters
  1. 01What Is an AI Personal Assistant?
  2. 02The Basics of Talking to AI
  3. 03Using AI to Organize Your Day
  4. 04Using AI for Work and Productivity
  5. 05Using AI for Money and Budgeting
  6. 06Using AI for Learning Anything Faster
  7. 07Using AI for Health, Fitness, and Meals
  8. 08Using AI for Family and Home Life
  9. 09Using AI for Travel and Personal Projects
  10. 10Using AI to Make Better Decisions
  11. 11AI Safety, Privacy, and Common Mistakes
  12. 12Building Your Personal AI System
Bonus Sections
  1. 13100 Copy-and-Paste AI Prompts
  2. 14AI Personal Assistant Worksheets
  3. 15The 15-Minute Quick Start Guide
₹499
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The Resourceful Consumer

By Reejoys · RJ Tech House

What this book is

There is a particular feeling that shows up around the middle of the month. You look at your balance and it is lower than you expected. Not catastrophically lower. Just lower. And you cannot immediately say why.

If that is familiar, you are not bad with money. You are living inside a system that is very good at extracting it. This is not a willpower problem, and the answer is not to try harder — it is better systems: decisions you make once, in advance, instead of every time you are tired. The book covers where money actually goes, the value equation, marketing traps, groceries, subscriptions, buying used, repair versus replace, big purchases, digital shopping discipline, and social pressure.

What you get

  • 178-page designed PDF, readable on phone, tablet, and print
  • 12 chapters plus three bonus sections
  • The Resourceful Consumer Toolkit — ten printable worksheets and trackers
  • 75 smart consumer rules
  • Scripts that save money — what to actually say to providers
  • 7-day starter plan and 30-day action plan

How it is written

Educational and informational only. Not financial, legal, tax, insurance, or professional advice. Every figure is an illustration, not a quote — prices, terms, warranties, and consumer protection rules vary by country, retailer, and date. Verify the current price, contract, and return policy yourself before acting. Brand references are descriptive; no endorsement is implied.

Inside the book

Core Chapters
  1. 01The New Consumer Reality
  2. 02Know Where Your Money Actually Goes
  3. 03The Value Equation
  4. 04Avoiding Marketing Traps
  5. 05Smarter Grocery and Household Spending
  6. 06Subscriptions, Bills, and Recurring Costs
  7. 07Buying Used Without Regret
  8. 08Repair, Reuse, Borrow, Rent, or Buy?
  9. 09Big Purchases Done Slowly
  10. 10Digital Shopping Discipline
  11. 11Family, Friends, and Social Pressure
  12. 12Build Your Resourceful Consumer System
Bonus Sections
  1. 13The Resourceful Consumer Toolkit — ten printable worksheets
  2. 1475 Smart Consumer Rules
  3. 15Scripts That Save Money
₹499
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Tiny Systems for a Better Life

By Reejoys · RJ Tech House

What this book is

It is the tiredness of holding everything in your head. The appointment you have not booked, the subscription you meant to cancel, the email you have re-read four times. None of it is a crisis. All of it is a small open loop, and open loops are heavy.

Most books about improving your life assume the problem is ambition — that you need bigger goals and stronger discipline. This one assumes the opposite. If you are reading this, you almost certainly have enough ambition. What you are short of is capacity. The book builds small, repeatable systems for mornings, evenings, weeks, money, home, health, work, digital life, and decisions — each one designed to survive a bad Tuesday.

What you get

  • 204-page designed PDF, readable on phone, tablet, and print
  • 12 chapters plus three bonus sections
  • 50 tiny systems you can start today
  • Twelve printable templates: daily planner, routine builders, reset checklists, habit and meal trackers, 30-day tracker
  • A troubleshooting guide for when a system stops working
  • Research notes on habit loops, friction, and cognitive load

How it is written

Educational and informational only. Not medical, mental health, financial, legal, or tax advice. The routines are ordinary daily-living practices offered as organising ideas, not treatment. If something in your life is serious — persistent low mood, disordered eating, unmanageable debt, a safety concern — that needs a qualified professional, not a checklist. All figures and timings are illustrations, and nothing here is promised to work for you.

Inside the book

Core Chapters
  1. 01What Is a Tiny System?
  2. 02The Psychology Behind Small Changes
  3. 03The Morning System
  4. 04The Evening Reset System
  5. 05The Weekly Reset System
  6. 06The Money System
  7. 07The Home System
  8. 08The Health System
  9. 09The Work and Productivity System
  10. 10The Digital Life System
  11. 11The Decision System
  12. 12Building Your Personal Life Operating System
Bonus Sections
  1. 1350 Tiny Systems You Can Start Today
  2. 14Worksheets and Templates — twelve printable pages
  3. 15Troubleshooting Guide
  4. 16Research Notes
₹499
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The UAE–India Money Playbook 2026

By Reejoys · RJ Tech House

What this book is

He is thirty-four. Six years in Dubai. He sends money home most months, has savings earning nothing, and an insurance-linked plan he suspects was a mistake but cannot bring himself to open. He is not bad with money. Nobody has ever shown him how the two sides fit together.

That gap is what this book closes. It covers the whole route — the UAE salary account, the remittance channel, NRI residency status, Indian tax after the Income-tax Act 2025, investing across AED and INR, property in Dubai, the Golden Visa, and the return home — as one connected system rather than nine disconnected decisions.

What you get

  • 168-page designed PDF, readable on phone, tablet, and print
  • 13 chapters across 5 parts, plus a bonus templates section
  • Nine worksheets: budget, remittance comparison, net-worth tracker, debt payoff, property viewing, and advisor question lists
  • The 7-Day Money Reset and the 30-Day UAE–India setup plan
  • Twenty-five mistakes chapter — the specific ways expats lose money
  • Glossary of UAE and Indian finance terms, plus verified official sources

How it is written

Educational only, never advice. Every rule carries a verify-before-acting note naming the official portal (icp.gov.ae, incometax.gov.in, dubailand.gov.ae). All money figures are illustrative, including the exchange rate used in worked examples. No guaranteed-return claims, no hype, and a full chapter on recognising a scam.

Inside the book

Part One — Getting Your Foundations Right
  1. 01The UAE–India Money Map
  2. 02Setting Up Your UAE Financial Life
Part Two — Moving Money and Managing Tax
  1. 03Sending Money from the UAE to India
  2. 04NRI Status and Indian Tax Basics
  3. 05India's Tax Regimes and Family Planning
Part Three — Building and Protecting Wealth
  1. 06Saving and Investing as a UAE-Based Indian
  2. 07Insurance and Protection Planning
  3. 08Loans, Credit Cards, and Debt Traps
Part Four — Property, Residency, and the Long Game
  1. 09Dubai and UAE Property for Indians
  2. 10UAE Golden Visa and Residency Planning
  3. 11Family, Education, and Long-Term Planning
Part Five — Doing It
  1. 12Twenty-Five Mistakes Indian Expats Make
  2. 13Your Action Plan
Bonus — Templates and Worksheets
  1. 14Nine fill-in templates, trackers, and advisor question sheets
₹499
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AI Agents for Everyday Work

By Reejoys · RJ Tech House

What this book is

"Agent" is the most oversold word in software right now. It is used for things that are genuinely autonomous, for ordinary chatbots with a new label, and for simple automations that were called "workflows" eighteen months ago. A normal person cannot tell, from a product page, whether they are being offered something that will book their travel or something that will write a paragraph about booking travel.

This book fixes that, then shows you how to get real value from the things that actually are agents — without handing your email account to software that can be talked into forwarding it elsewhere. The organising insight is simple: agents are reliable on short, well-defined work and unreliable on long, open-ended work, with a steep decline in between.

What you get

  • 111-page designed PDF, readable on phone, tablet, and print
  • 12 chapters across three parts
  • Bonus section: briefs, checklists, and templates
  • Your Thirty-Day Agent Practice
  • A chapter on designing the approval step — what an agent may do alone
  • Glossary, plus research notes and named sources

How it is written

Educational material, not professional advice, and not a security assessment of any product. It recommends no specific products — tool categories are described generically because the market changes monthly. Not legal, security, financial, or compliance advice. Security guidance is general and defensive. Every figure is illustrative unless explicitly sourced. Deliberately conservative: where caution and convenience were in tension, it chose caution.

Inside the book

Part One — What They Are
  1. 01What an AI Agent Actually Is
  2. 02How Agents Differ from Chatbots
  3. 03The Permission You Are Actually Granting
Part Two — The Everyday Uses
  1. 04Research Agents
  2. 05Email and Calendar
  3. 06Documents and Summarisation
  4. 07Planning and Multi-Step Tasks
  5. 08Workflow Automation Without Code
Part Three — Keeping Control
  1. 09Designing the Approval Step
  2. 10Privacy, Permissions, and Data Reach
  3. 11When Not to Use an Agent
  4. 12Your Thirty-Day Agent Practice
Back
  1. 13Bonus Section: Briefs, Checklists, and Templates
  2. 14Glossary, Research Notes and Sources
₹499
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The AI Career Survival Guide

By Reejoys · RJ Tech House

What this book is

There are two industries built around this subject, and both are selling you something. The first sells alarm: everything is about to change, your job is about to disappear, act immediately — usually by buying a course. The second sells comfort: AI is just a tool, human creativity is irreplaceable, nothing important will change.

Neither is honest, and both are unhelpful in the same way: they tell you how to feel rather than what to do. This book takes a third position — something real is happening, it is uneven, it is measurable in places and speculative in others, and there is a specific set of things worth doing about it that would be worth doing anyway. Clearer judgement, better writing, a record of your work, and the ability to use the tools your industry uses improve your position whether or not any particular forecast comes true.

What you get

  • 114-page designed PDF, readable on phone, tablet, and print
  • 13 chapters across four parts
  • The 30-Day AI Career Upgrade plan
  • Bonus section: worksheets, scripts, and templates
  • A framework for auditing your own job, task by task
  • Guidance split by situation: employees, managers, freelancers, job seekers

How it is written

Educational material, not professional advice. Not employment law advice — rules on AI in hiring, monitoring, and dismissal differ by country and change quickly; verify your position with a qualified adviser or your union. Not career advice for your specific situation. It does not predict the future: forecasts about employment and AI have a poor track record in both directions, so the book stays close to measured evidence and says explicitly where the evidence is thin. If you are facing redundancy or dismissal, get specific advice quickly.

Inside the book

Part One — What Is Actually Happening
  1. 01The Evidence, Not the Headlines
  2. 02What AI Is Good and Bad At, in Job Terms
  3. 03Auditing Your Own Job
Part Two — The Capabilities
  1. 04AI Literacy: The Baseline
  2. 05Prompting as a Workplace Skill
  3. 06Using AI at Work Without Getting Into Trouble
Part Three — What Appreciates
  1. 07The Human Skills That Are Gaining Value
  2. 08Becoming Harder to Replace
  3. 09Proof of Work
  4. 10Reskilling Plans That Actually Finish
Part Four — Your Situation
  1. 11Employees, Managers, Freelancers, Job Seekers
  2. 12The Job Search in an AI-Saturated Market
  3. 13The 30-Day AI Career Upgrade
Back
  1. 14Bonus Section: Worksheets, Scripts, and Templates
  2. 15Glossary, Research Notes and Sources
₹499
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AI for Small Business Owners

By Reejoys · RJ Tech House

What this book is

You did not buy this book because you are short of information about artificial intelligence. You are drowning in it. Every week another consultant emails you about an AI transformation. A competitor puts "AI-powered" on their website. A tool you have never heard of is sold to you as essential, at a monthly price, on a plan that renews annually.

Meanwhile you have payroll on Friday, a supplier who has not confirmed the order, two customers waiting on quotes, and a contact form that has been quietly broken since March. This book takes a specific position on that situation: the overwhelm is not a personal failing and it is not a sign that you are behind. The way out is not to try harder to keep up — it is to narrow the question until it becomes answerable.

What you get

  • 111-page designed PDF, readable on phone, tablet, and print
  • 12 chapters across three parts
  • Bonus section: prompts, templates, and worksheets
  • A method for finding your first three uses — not thirty
  • Choosing tools without wasting money, and measuring whether it worked
  • Glossary, plus research notes and named sources

How it is written

Educational material, not professional advice. Nothing here is legal, accounting, or tax advice — employment, consumer protection, data protection, and advertising law differ by country and sector and are changing quickly where AI is concerned. No specific product is recommended; tool categories are described generically. Every figure is illustrative unless explicitly sourced. Written around the fact that AI systems make confident mistakes: never put an AI output in front of a customer, regulator, lender, or court without a human check.

Inside the book

Part One — Getting Your Bearings
  1. 01What AI Actually Does, in Plain English
  2. 02Finding Your First Three Uses
Part Two — The Work
  1. 03Marketing and Content
  2. 04Sales and Follow-Up
  3. 05Customer Service
  4. 06Admin and Daily Operations
  5. 07Finance and Bookkeeping Support
  6. 08Hiring and People
Part Three — Doing It Without Getting Burned
  1. 09Choosing Tools Without Wasting Money
  2. 10Training Your Team
  3. 11Data, Privacy, and Legal Exposure
  4. 12Measuring Whether It Worked
Back
  1. 13Bonus Section: Prompts, Templates, and Worksheets
  2. 14Glossary, Research Notes and Sources
₹499
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AI Money Safety

By Reejoys · RJ Tech House

What this book is

Imagine a stranger who is articulate, patient, endlessly available, never condescending, and apparently well-read on every financial topic you could name. They will explain compound interest at eleven at night without sighing. They will answer the question you were embarrassed to ask your bank.

Now imagine that this stranger is wrong about specific facts a substantial part of the time, cannot tell you which part, has no idea which country's rules apply to you, sometimes tells you what you seem to want to hear, and has no licence, no accountability, and no consequences if your money disappears. That is the situation, described accurately. This book is about how to get the benefit of the first paragraph while defending against the second.

What you get

  • 112-page designed PDF, readable on phone, tablet, and print
  • 13 chapters across three parts
  • Bonus section: prompts, checklists, and worksheets
  • The six ways AI gets money wrong — and how to spot each one
  • The safe zone and the danger zone, mapped by question type
  • When AI is the weapon, not the tool — and when to pay a professional

How it is written

Educational material. It is not financial, investment, tax, or legal advice and is not a substitute for any of them. The author is not a licensed financial adviser. It contains no recommendations about what to buy, sell, hold, borrow, save, or file — its entire subject is how to use a tool safely. Nothing is jurisdiction-specific. AI systems produce confident, fluent, incorrect answers; never act on an AI answer to a money question without independent verification. If you are in financial difficulty, seek free regulated debt advice, not an AI.

Inside the book

Part One — How It Fails
  1. 01Why Money Is the Hardest Question to Ask
  2. 02The Six Ways AI Gets Money Wrong
  3. 03The Safe Zone and the Danger Zone
Part Two — The Money Questions
  1. 04Budgeting and Everyday Spending
  2. 05Saving, Emergency Funds, and Goals
  3. 06Debt
  4. 07Investing
  5. 08Tax
  6. 09Retirement and Long Horizons
  7. 10Insurance, Big Purchases, and Contracts
Part Three — Protecting Yourself
  1. 11When AI Is the Weapon, Not the Tool
  2. 12Prompting for Better Financial Thinking
  3. 13Verification, and When to Pay a Professional
Back
  1. 14Bonus Section: Prompts, Checklists, and Worksheets
  2. 15Glossary, Research Notes and Sources
₹499
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The Personal Cybersecurity Playbook 2026

By Reejoys · RJ Tech House

What this book is

Almost everyone who reads a book like this begins from the same position: nobody would bother with me, I'm not important, there's nothing interesting in my email. All of that is probably true, and none of it protects you, because you have misunderstood how this works.

Nobody chose you. You were not selected, researched, or targeted. Your email address appeared in a list. An automated system tried a password that leaked from a shopping site in 2019 against forty other services. The economics are industrial, and industrial economics do not care whether you are interesting. The consequences, however, are entirely personal: a compromised email account is not an inconvenience, it is the key to every other account you own. A cloned voice does not need to fool the world; it needs to fool your mother for ninety seconds.

What you get

  • 115-page designed PDF, readable on phone, tablet, and print
  • 14 chapters across four parts
  • Bonus section: checklists, cards, and the 30-Day Plan
  • Passwords, passkeys, and multi-factor authentication done properly
  • AI phishing, deepfake voice and video, and family codewords
  • Data brokers, what you leak, and a full After a Hack chapter

How it is written

Defensive, educational material for individuals and families. It contains no attack techniques — threats are described only to the level needed to recognise them. Not a technical security manual, not a professional security assessment, and not legal advice. Not jurisdiction-specific: reporting bodies and liability rules for fraudulent payments differ by country. Security guidance ages, so the principles are durable and the mechanisms are not. If you are experiencing stalking, domestic abuse, or targeted harassment, some steps here can escalate danger — contact a specialist organisation first.

Inside the book

Part One — The Foundations
  1. 01Your Real Threat Model
  2. 02Passwords and Password Managers
  3. 03Passkeys
  4. 04Multi-Factor Authentication, Done Properly
  5. 05Email: The Master Key
Part Two — Devices and Money
  1. 06Your Phone
  2. 07Protecting Your Money
Part Three — The New Threats
  1. 08AI Phishing
  2. 09Deepfake Voice and Video
  3. 10Family Codewords and Household Protocols
Part Four — Your Exposure
  1. 11Social Media and What You Leak
  2. 12Data Brokers
  3. 13Browsing, Devices, Networks, and Backups
  4. 14After a Hack
Back
  1. 15Bonus Section: Checklists, Cards, and the 30-Day Plan
  2. 16Glossary, Research Notes and Sources
₹499
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