It's probably super simple for those that are Linux experts??
I guess you install scripts and once they are up and running it should be pretty straightforward, but I can't seem to understand how to get the scripts loaded properly.
I would recommend extracting the file in your Home Downloads folder (~/Downloads).
Open a terminal and (C)hange (D)irectory to your ~/Downloads:
cd ~/Downloads
Now, enter the command to give all scripts executable permission (The asterisk denotes all). You can just copy and paste each of these commands into terminal (the help page you linked to has a typo in this first command. Shame on them): chmod a+x *.pl
Then set it up following the on screen prompts: ./account_setting.pl