What you are buying

A personal licence to read one digital book, supplied as PDF and EPUB, for your own use. You are not buying the copyright, the right to resell it, or the right to distribute copies.

Payment

Prices are shown in US dollars at the point of purchase, which is when payment is taken by our payment provider. We do not store card details ourselves.

What the licence allows

• Read the book on any device you own.
• Print one copy for your own use.
• Quote short passages with attribution to the author and the title.

What it does not allow

• Uploading the file to a file-sharing site or passing copies to colleagues.
• Reselling it, or bundling it into a paid course or product.
• Using the full text to train a machine-learning model without written permission.

Delivery

Download links are issued at purchase and repeated by email. If a link fails, we reissue it at no cost. The digital delivery page explains the details.

Refunds

The refund policy forms part of these terms and sets out the 30-day window.

Team and classroom use

For several readers, email hello@zentesto.online. A separate licence applies and we will quote it in writing.

Governing law

These terms are governed by the law of the jurisdiction in which ZenTesto is registered. Nothing here removes the rights your local consumer law gives you.

Last updated

4 November 2026