Armada currently runs only on Linux with Docker installed. If you want to learn and play with Armada on your own machine (whether it's Windows, Mac or Linux) you can do it using e.g. Vagrant box. Install VirtualBox, Vagrant and vagrant-vbguest plugin. Then:
If you don't have curl available, you can download it from here.
To run Armada natively on Linux, first install Docker, then run the installation script: