Brian J. O?Connor Books

These 22 all-new tales pay tribute to the true heroes—the people who enable and put up with heroes. From what it’s like to be Hercules’ wife (complete with an appearance by Hercul...

The 1,000 Challenge

By Brian J. O Connor

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Are You Brave Enough for the $1,000 Challenge? Middle-class incomes are stretched more than ever. Feeling the strain himself, personal finance columnist Brian O’Connor decided...

How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.