
(btw, I did a little edit above)
As stated, take your time. That's most important. You will - we all do - learn continually more with every new script you make, and with every error you fix by yourself.
You can find some helpful links about debugging and common errors
here Use /help frequently. It's your best friend!
This reference is also a big help:
mScriptBox v1.20And of course: should you have questions, or problems with your code you cannot solve on your own, just start a fresh thread on this message board

Reply to edit: You can rename "alias remban {" to "alias unban {" (and other occurrences of "remban" in that script), but better keep the names of the other aliases.