Hi Qazi, great article!
Denis Murphy

The folder_of_awesomeness is just where we are putting our very first virtual box. This folder IS created on your MAC. You could have created it with your mouse using the GUI, OR create it from the command line. We chose the latter cause it’s quicker.

To find this folder, if you go to your home directory, it should be there. users/denis/folder_of_awesomeness . Obviously, assuming your username on your computer is denis.