Terms and Conditions
Last updated: September 25, 2026
These terms apply to all purchases from AhmedRBooks (ahmedrbooks.com), operated by Ahmed Rubel. By placing an order, you agree to these terms.
1. Products and delivery
All products are digital files (such as PDF ebooks and companion files). After successful payment, download links appear on the order confirmation page and are sent to your email. Each link allows up to 5 downloads and expires 30 days after purchase. Please save your files after downloading.
2. Prices and payment
Prices are shown in Japanese yen (JPY). Payments are processed securely by our payment provider; we do not store your card details. Prices may change, but changes do not affect orders already placed.
3. License and permitted use
Your purchase grants you a personal, non-transferable license for your own use. You may not copy, share, resell, upload, or distribute the ebook, in whole or in part, without written permission. Brief quotations in reviews are permitted. Companion source code may be used and modified freely for learning.
4. Educational content
Our books are educational. Examples are not production specifications and are not safety-certified designs. Features of commercial tools vary between versions; consult the vendor’s documentation for your installed version. While every effort is made to ensure accuracy, we are not responsible for errors, omissions, or damages resulting from the use of the information provided.
5. Refunds
Please see our Refund Policy.
6. Trademarks
IBM, Rational, and Rhapsody are trademarks of International Business Machines Corporation. Visual Studio Code is a trademark of Microsoft Corporation. All other trademarks are the property of their respective owners. Our publications are independent and are not affiliated with, endorsed by, or sponsored by IBM or Microsoft.
7. Governing law
These terms are governed by the laws of Japan.
8. Changes and contact
We may update these terms from time to time; the version in effect at the time of your purchase applies to that order. Questions: support@ahmedrbooks.com.