Please note that you can download the Anaconda documentation and user guide for free from the Anaconda website.
Also, you can get the e-book from O'Reilly Media:
Title: "Building Data Science Solutions with Anaconda"
You can get it from here: https://www.oreilly.com/library/view/building-data-science/9781492091249/
Here is the link to download: https://www.anaconda.com/downloads