Everything You Need to Self-Publish
on Amazon KDP
Practical guides, honest cost breakdowns, and unbiased tool comparisons for independent authors.
No fluff, no upsells.
What You Will Find Here
The Shadow Quill is a free resource site for self-published authors. Every guide is research-backed, independently written, and built around one goal: helping you make better publishing decisions.
Publishing Costs
What does it actually cost to self-publish in 2026? We break down every expense with real numbers — from KDP fees to cover design.
Book Formatting
Vellum, Atticus, or a free alternative? We compare every major formatting tool so you can choose the right one before you spend a dollar.
Starting Your Publishing Business
How to set up, structure, and run a self-publishing operation — from choosing your platform to understanding your royalties.
Latest Guides
New guides published every week, covering costs, tools, platforms, and everything else independent authors need to make informed publishing decisions.
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Quick Answer: Atticus book formatting review verdict in short: Atticus costs $147 as a one-time payment and runs on Windows, Mac, Linux, and Chromebook, making it the strongest cross-platform alternative to Vellum. It combines a writing environment with professional interior formatting in one application, so authors can draft and format without switching tools. Atticus is…
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Quick Answer: No, you do not need to provide your own ISBN to publish on KDP. Amazon automatically assigns a free ASIN for ebooks and a free ISBN for print books, with “Independently published” listed as the publisher of record. If you publish exclusively on KDP and have no plans to distribute through bookstores, libraries,…
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Quick Answer: Self-publishing gives authors higher royalty rates, full creative control, and faster time to market, but requires them to fund and manage editing, cover design, formatting, and marketing independently. Traditional publishing provides an advance, publisher-funded production, and distribution infrastructure, but offers royalty rates of 7% to 15% on print and takes 12 to 24…
No courses. No coaching. No agenda.
Just the information independent authors need.