How do I set owner? :p DO I type it in where it says "Please set my owner"?

That is in the on load meaning when you load this script it will open a small box, the box will say "Please set my owner" under that box you type your "Bot owner name".

The way I see this is you have two on text and one is "on :text::?:{" to read all commands and everything typed, the other is for .cmd when you type the .cmd the other on text will say "Sorry $nick - I'm a bot, talk to iAlex". To solve this use what
Jethro_ posted or put it into one on text event.