As of 1 October 2020, this bookcan be purchased at any of the major online bookstores, such as Amazon and many others. You will also be able to order your personal copy at most book retailers in your area.
Ebook version: from USD 4,99
Print version (soft-cover): from USD 9,99
The ebook version (ePub or PDF) can also be downloaded directly from this webpage via the "Pay What Feels Right" option.