Privacy

Summary

There are no accounts, no comments and no forms on this site. We do not sell or share personal data. If advertising is switched on in future, this page will name the provider and explain its cookies first.

Information stored on your device

Some preferences and your learning progress are saved in your browser’s local storage, on your device only:

• dch-theme: your light or dark theme choice.
• dch-sidebar: whether you hid the course menu.
• dch-progress-v1: pages you have opened, items you marked as done, and the last lesson you visited, so the site can show your progress and a “continue” link.

This information is never sent to us or anyone else. It stays in this browser, does not follow you to other devices, and is removed if you clear this site’s data. You can also clear your progress with the “Reset” link in the “Your progress” panel on the home page.

Analytics

This deployment does not currently load any analytics script. If aggregate analytics are enabled later, this page will be updated to name the tool before it is switched on.

Server logs

Our hosting provider, Cloudflare, processes requests to deliver the site and may keep standard technical logs such as IP address and user agent for security and reliability. See Cloudflare’s own privacy documentation for details.

Search

Search runs entirely in your browser against a static index. Your search terms are not sent to a server.

External links

Pages link to external sites such as vendor documentation. Those sites have their own privacy practices.