Before we can start learning how to secure Microsoft 365 we will need a test tenant. A tenant where we can implement whatever you want and test things out before implementing them in production. A place where we can perform hands-on learning in a live environment without affecting production. Fortunately, we can set up a Microsoft 365 tenant for free to try out. You only need a free email address, such as gmail.com, outlook.com, or yahoo.com, and a phone number.