Which OS to use

In the Installing Docker video, Mosh says that Linux does not cannot do containers without using a VM. The impression is that he is using a Mac computer. Yet if you look at the course syllabus, there seems to be a lot of Linux information. I have a Windows 10 system, and a Macbook (I have Linux VM,s but not a Linux hardware system. I am stronger in Windows, but am wondering if I should do the course on the MAC because it might be easier to follow along.

Docker is independent of OS, and containers are invented on Linux. You can run Docker on any OS. All of them are some kind of Virtual Machines. Here you have a short explanation: