Jocko Willink Books

With their first book, Extreme Ownership (2015), Jocko Willink and Leif Babin challenged readers to become better leaders, better followers, and better people in both their professional and persona...

Leadership Strategy and Tactics

By Jocko Willink

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Marc s mission

By Jocko Willink

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Now, in this second book in the Warrior Kid series, Marc uses what he learned last summer to help another kid who needs a boost. Can he take the skills he learned from his Navy SEAL uncle Jake to i...

Discipline equals freedom

By Jocko Willink

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An ex-Navy SEAL presents a guide on how to achieve freedom through discipline, outlining the mental and physical practices that shaped his career and continue to help him reach fulfilling goals whi...

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.