u/Upset-Taro-4202

Hello, recently just got a new MacBook after my old "work" station died. Since it came with Vim preinstalled, I felt adamant to learn it but I'm getting confused by 1.5.2.

I guess the only way I can describe my confusion is that;

I can't tell what the final product of the lesson is supposed to look like

or

If there exists a niche Mac rewriting of the commands it's asking me to use for writing files (:!dir and :!1s and :w [NEW FILE NAME]).

I'm so inexperienced with Vim that I'm not even sure whether this is a stupid question to ask or not, but any help would be appreciated! Thanks!