The Learning Zone
Practical design, formatting, and editorial guidance for authors and publishers bringing a book to print.
KDP vs. IngramSpark: Which Should You Use for Print Distribution?
Should you use KDP or IngramSpark for print? Use both: KDP for Amazon, and IngramSpark set up on its own for everywhere else. Here’s why.
How to Calculate Spine Width for a KDP Paperback
Skip the manual math. KDP’s Cover Calculator builds your spine and cover template from your exact specs. Here’s how to use it and when to regenerate it.
Simple, Medium, or Complex Ebook: What Actually Determines the Tier?
Ebook pricing isn’t ranked by length — it’s ranked by how many elements the reflow has to carry. Here’s what actually separates Simple, Medium, and Complex ebooks, and the real signal that should drive the choice.
What Actually Goes Into an EPUB File? (And Why “Just Convert My Word Doc” Goes Wrong)
An EPUB isn’t a “format” the way a PDF is — it’s XHTML, CSS, and a manifest zipped together. Here’s what’s actually inside, and why some conversions hold up and others don’t.
Can AI-Generated Art Go Straight to Print in a Book?
AI-generated book art rarely arrives print-ready. Here’s what actually goes wrong between an AI image generator and a printed page, and what it takes to fix it.
Why Don’t Hybrid-Published Authors Always Own Their Book’s Files?
Owning your book’s copyright and owning its production files aren’t the same thing. Here’s how hybrid publishing file ownership actually breaks down, and what to ask before you sign.
Why Does My Nonfiction Book Read Differently Once It’s Actually Designed?
Nonfiction manuscripts read differently once they’re designed because order, callouts, typography, and page count can’t be fully judged until the book is real.
Why Is My KDP Book Category Getting Me No Sales?
More than a quarter of KDP book categories are ghosts — selectable but invisible to shoppers. Here’s how to spot one and verify a category is live before you publish.
Why Does My Ebook Look Wrong on Some Kindle Devices but Fine on Others?
An ebook that looks fine on one Kindle device and broken on another is almost always a fixed-value formatting issue, not a file error KDP would catch.
Why Is My KDP Book Stuck in “In Review” for Days?
Your KDP book has been “In Review” for days and you don’t know if that’s normal. Here’s what the status actually means, how long review should take, and when to contact KDP support.