Copy and paste in specific environment?

[thespida 0]

So, I'm really really new to Autoit, not so new to coding, but I'm trying to figure out how to grab specific strings inside of... lets say Firefox, and then copy them to an array, then from that array paste the infomation onto a ticket.

The array I can figure out myself pretty easy, but it someone can show me how to copy the URL from the Address bar in Firefox (Lets say it's Google.com) then paste the "clipboard" to the Search box inside the webpage, i think this would get me going..

Any clues guys..? =D