Philip Ghezelbash

Philip Ghezelbash

Founder of Koobe

Philip Ghezelbash is the founder of Koobe, an AI ebook generator that helps authors, coaches and course creators turn an idea into a finished ebook.

He is the author of The Stoic Body, which has sold over 10,000 copies on Amazon and earned more than 100 five-star reviews. Having written, published and sold a book himself, he built Koobe around the parts of the process that take the most time: planning chapters, drafting, designing covers and getting files ready for stores like Amazon KDP.

He also spent years running Writing Studio as a content agency, working with more than 500 companies across software, fintech and ecommerce. On this blog he shares what he has learned about writing, publishing and selling ebooks.

Posts by Philip Ghezelbash

Writing · 10 min read

How to Write an Ebook With AI

A practical workflow for writing an ebook with AI. Plan the book, draft with context, add your own voice, check facts and avoid generic output.
Publishing · 9 min read

How to Publish a Book on Kobo

How to publish an ebook on Kobo Writing Life: sign up, add your bank details, upload your EPUB or Word file, set a price, and why Kobo rejects books. Checked October 2026.
Publishing · 12 min read

How to Self-Publish an Ebook

How to self-publish an ebook in 2026: edit, cover, format, pick a store (Amazon, Apple, Kobo, Google Play), set a price and publish. Costs, royalties and AI rules.
Writing · 10 min read

10 Best AI Book Writers in 2026 (Free and Paid)

The 10 best AI book writers in 2026, compared by what they are built for, what is free and what costs money. Includes fiction and nonfiction picks and pricing checked October 2026.
Selling · 10 min read

10 Best Places to Sell Ebooks in 2026

The 10 best places to sell ebooks in 2026, from Amazon KDP, Apple Books, Kobo and Google Play to Draft2Digital, Etsy, Gumroad, Payhip and your own site. Fees, royalties and who each suits.
Selling · 10 min read

10 High-Converting Ebook Landing Page Examples

See 10 real ebook landing pages, free and paid, from big brands and small creators. What each does well, what to copy, and how to build your own. Checked October 2026.
Writing · 11 min read

62 Ebook Ideas by Niche, Plus How to Pick One

62 ebook ideas that readers want, grouped by niche, plus a simple way to check demand and choose the idea that fits you.
Publishing · 8 min read

Can I Publish a Book Written by AI on Amazon?

Yes, you can publish AI-written books on Amazon KDP if you disclose them and meet quality rules. Learn the AI-generated vs AI-assisted line and how to avoid low-quality books.
Publishing · 7 min read

Do You Need an ISBN for an Ebook?

Do you need an ISBN for an ebook? Usually not. See the rules for Amazon KDP, Apple Books, Kobo and Google Play, what an ISBN costs, and when buying one makes sense.
Writing · 7 min read

How Long Should an Ebook Be?

Typical ebook lengths by type, from 2,000-word lead magnets to 60,000-word books, with page counts, reading times and what readers expect.
Writing · 10 min read

How Much Does an Ebook Ghostwriter Cost?

Ebook ghostwriters usually charge about $0.30 to $1.00 per word. See sourced 2026 rates, worked examples for 10,000, 20,000 and 40,000 word ebooks, extra costs and cheaper options.
Selling · 8 min read

How to Create a Lead Magnet Ebook

How coaches and consultants can create a short lead magnet ebook that solves one problem, grows an email list and leads to real conversations.
Publishing · 9 min read

How to Design an Ebook Cover That Sells

How to design an ebook cover that works at thumbnail size. Sizes for Kindle, Apple Books, Kobo and Google Play, layout rules, AI cover tips and a checklist.
Selling · 9 min read

How to Get Book Reviews (Without Breaking Amazon’s Rules)

How to get honest book reviews: what Amazon allows, how to ask readers, advance reader services and their costs, and what to avoid. Checked October 2026.
Selling · 10 min read

How to Make Money Selling Ebooks

How to make money selling ebooks, with realistic numbers. Pricing, sales math, five ways ebooks earn, and the mistakes that keep most ebooks from selling.
Selling · 9 min read

How to Promote an Ebook: 10 Ways That Work

A practical plan to promote your ebook: build an email list, launch with advance readers, use Amazon tools, and sell direct. Real costs and rules, checked October 2026.
Publishing · 8 min read

How to Publish a Book on Apple Books

How to publish an ebook on Apple Books: what you need, the steps in Apple’s publishing portal, pricing and royalties, and why books get rejected. Checked October 2026.
Publishing · 8 min read

How to Publish a Book on Google Play Books

How to publish an ebook on Google Play Books: Partner Center signup, file and cover rules, pricing, payments and how long review takes. Checked October 2026.
Publishing · 9 min read

How to Publish an Ebook on Amazon KDP

Publish your ebook on Amazon KDP step by step, from account and tax interview to AI disclosure, upload, KDP Select, royalties and pricing.
Selling · 9 min read

How to Sell Ebooks on Etsy

How to sell ebooks on Etsy as digital downloads: set up a shop, make a listing, understand fees and the AI disclosure rule, and avoid common mistakes.
Writing · 10 min read

How to Write a Book With ChatGPT

A step-by-step method for writing a book with ChatGPT, with prompts for planning, outlining, drafting and editing, plus where a general chatbot falls short.
Writing · 8 min read

How to Write an Ebook

A practical, step-by-step guide to writing an ebook. Choose a topic and reader, outline, draft, edit, design, format, make a cover and publish.
Publishing · 6 min read

PDF vs EPUB: Which Ebook Format Should You Use?

PDF vs EPUB explained. Fixed vs reflowable layout, which stores accept each, and when to sell a PDF directly or an EPUB through stores.
Writing · 9 min read

The 7 Best AI Ebook Generators in 2026

The 7 best AI ebook generators in 2026, compared by what each one actually does: writing, design, export and publishing. Includes a checklist for choosing the right one.
Publishing · 8 min read

What Is an Ebook?

An ebook is a book in digital form that you read on a phone, tablet, computer or e-reader. Learn the definition, formats like EPUB and PDF, types of ebooks and how they differ from print.