
ISBN-10 vs ISBN-13: Which One Your Book Needs in 2026
Every book published since 2007 needs an ISBN-13. Here's what that means for an older ISBN-10, how to convert it, and why 979 numbers can't go back.
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How ISBNs work, when you need one, and how to publish your book correctly across print and digital formats from day one.
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Every book published since 2007 needs an ISBN-13. Here's what that means for an older ISBN-10, how to convert it, and why 979 numbers can't go back.

Indie bookstores doubled since 2009 and B&N is opening stores again. Why most self-published books still miss the shelf, and the settings that fix it.

IngramSpark offers wide distribution, print-on-demand, creative control, and ease of use, though it also comes with some challenges.

KDP's royalty option, Select checkbox and price point each move real money. The 2026 numbers from Amazon's help pages, and what to check on every title.

Where ISBNs come from, what Bowker charges, what the free KDP and IngramSpark numbers cost you in return, and what to fill in once you have one.