[lutusp]

> I am trying to run a command line flag in Google Chrome. I have no clue how its done, so I went to the 'how-to' page here ...

But the page you linked is about chromium, not Chrome. Similar but not identical. This would have been a better choice:

http://www.ericdlarson.com/misc/chrome_command_line_flags.ht...

Here's an example of a launch with an argument (in a shell session):

    $ google-chrome http://news.ycombinator.com/

And with a flag:

    $ google-chrome --make-default-browser

[bankerofpawns → lutusp]

I am a beginner so can you walk me through the steps from step 1?

I am in Terminal right now, is that step 1? Step 2, what do I type in there? I need simple, clear instructions like that because I don't know anything about this.