Privacy Policy

Last updated: July 25, 2020

Google Analytics

On January 29, 2019, we started using Google Analytics (with IP anonymization). This is to better understand how site visitors navigate and use the site so that we can improve it. It also allows us to serve visitors ads on other sites based on their visits to our site. However, we are currently not serving any ads.

You may opt out of Google Analytics by using the Google Analytics Opt-out Browser Add-on.

Mailing lists

We no longer send mass promotional emails. We discontinued all marketing email lists and removed all customer data from such services. We will only get in touch with you if some action is required on your part, or if we need to clarify anything with you personally.

Online Course

Signing up for the Online Edition of the course is free and allows you to start saving your progress for Lesson 1.

We will not send you promotional emails. Instead, we offer permanent discounts.

When you sign up, you need to provide your name and email address. You will need to confirm your email by clicking on a link to our site. You will then receive your course account details.

You can delete your account anytime by signing in to the course and going to settings (gear symbol), then opening the profile tab. The delete link is under Licensed to.

When you become a paying user, you will have access to all course lessons.

We store information pertaining to your progress: the page you are on, your current settings, audio played, last visit, last IP address etc. This information allows us to restore your learning session at a later time and to troubleshoot in case of problems.

You can edit your account details by going to the settings (gear icon), then opening the profile tab.

We use cookies to identify you in the online course after you sign in. This way, you don’t need to sign in for every action you take in the online course (which would be extremely impractical). By saving your progress to our server, you can resume where you left off on any device. These cookies are only used on our site.

Please do not disable all cookies in your browser. If you want to disable Google Analytics, follow the instructions above.

Order information

All purchases made through our Buy page, are handled by our trusted reseller and payment processor FastSpring. Our print books are sold by online booksellers such as Amazon. We do not collect or store any financial information from our customers. All sensitive data stays with FastSpring or with the booksellers.

FastSpring collects personal data during a purchase. FastSpring then forwards your order number, name, email address and mailing address to us. We never pass on this data to others. We need this data to resolve any questions or any issues with orders and course accounts.

We do not receive any customer information from booksellers.

To view FastSpring’s privacy policy, click here.

Updating your information

If you would like to update or delete your personal information, please contact us.

You can edit or delete your Online Course account anytime by going to the course account settings.

Contact us

If you have any questions or concerns about this Privacy Policy, please contact us.

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