First instruction for a total newbie is telling them to switch to a root shell (and later having them perform a recursive remove). Nothing could possibly wrong with that tutorial.

This doesn't seem particularly well written. If you're going to explain the directory structure, you could talk about the root directory, the home directory (and shortcuts to it), the things that . and .. actually refer to, maybe refer to man hier. Oh wait, it doesn't refer to man at all.

The example for moving a folder's contents is just wrong, or at least I've never seen a system where mv ./a ./b moves a's contents into b. The example of recursive copy is stupid because it doesn't use nested directories and thus doesn't explain the recursion at all.

Vim. Is it read mode or view mode or what? I don't get why this introduction that only explains how to get into insert mode and save & quit is useful. Might as well point them to a more newbie-friendly editor.

All Unix scripts start with hash-bang /bin/bash?

This post is a rather poorly selected assortment of bad examples poorly explained, and I honestly can't imagine a total newbie finding much help here. More likely he'll just turn away confused.