# License & Attribution

## Original Content Copyright

All business concepts, mental models, definitions, and terminology contained in the `skills/` directory are derived from:

**"The Personal MBA: Master the Art of Business"**
By Josh Kaufman
Copyright (c) Josh Kaufman, all rights reserved.

Official website: https://personalmba.com/
Buy the book: https://personalmba.com/#buy

These concepts are published by Josh Kaufman as free educational content on his website (https://personalmba.com/). This repository is an **unofficial, fan-made structured index** that organizes these publicly available concepts into a machine-readable format for use with AI agents and personal knowledge management systems.

**This repository is NOT the book.** It is a derivative reference work that extracts and structures the freely available concept summaries from the book's companion website. For the complete text, detailed explanations, examples, and the full educational experience, you must purchase the book.

## This Repository's Contributions

The following elements are original contributions of this repository and are licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License (CC BY-NC-SA 4.0):

- The JSON schema and structure applied to each concept
- The directory hierarchy and chapter organization
- The AGENTS.md and SKILL.md files (agent integration instructions)
- The README.md and all documentation
- The install.sh script
- The diagnostic questions and system dependency cross-references (where these represent editorial additions beyond the source text)

Full license text: https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode

**You are free to:**
- **Share** — copy and redistribute the material in any medium or format
- **Adapt** — remix, transform, and build upon the material

**Under the following terms:**
- **Attribution** — You must give appropriate credit to both Josh Kaufman (original concepts) and this repository (structure/organization), provide a link to the license, and indicate if changes were made.
- **NonCommercial** — You may not use the material for commercial purposes without permission from the respective rights holders.
- **ShareAlike** — If you remix, transform, or build upon the material, you must distribute your contributions under the same license as the original.

## Disclaimer

This repository is not affiliated with, endorsed by, or sponsored by Josh Kaufman or PersonalMBA.com. All trademarks and registered trademarks are the property of their respective owners.

The structured extractions in this repository are provided for educational and reference purposes only. While care has been taken to accurately represent the source concepts, errors or omissions may exist. Always refer to the original book for authoritative content.

If you are the rights holder and have concerns about this repository, please open a GitHub issue for prompt resolution.

## Why Non-Commercial?

The non-commercial restriction exists for one reason: **we want you to buy the book.** Josh Kaufman spent years developing these concepts. The book contains far more depth, context, stories, and practical guidance than these summaries. If you find this skill library useful, the best way to thank Josh Kaufman is to purchase *The Personal MBA* and read it cover to cover.

[Buy The Personal MBA on Amazon](https://www.amazon.com/Personal-MBA-Master-Art-Business/dp/1591845572)
[Buy on personalmba.com](https://personalmba.com/#buy)