To get the most out of this book
To get the most out of the book, I highly recommend you have a Dynamics 365 solution set up. If you do not have this set up, you can easily create a trial from https://dynamics.microsoft.com/en-gb/dynamics-365-free-trial/ and select Dynamics 365 Marketing. You will then get a 30-day free trial, where you can test everything we go through in the book.
You can read more about the prerequisites for setting up a system on this site: https://learn.microsoft.com/en-us/dynamics365/marketing/purchase-setup#prerequisites-and-requirements.