How do you write a screenplay, exactly? I wrote mine in a weird format, and I don't understand the format that they have on the site. Any help?

there's a free program called Celtx where it automatically formats your script but there are also some books on the subject. A couple I have are:

You Can Write a Movie by Pamela Wallace (she wrote Witness)

The Complete Book of Scriptwriting by J. Michael Straczynski (creator Babylon 5)

might find others in your local bookstore or library.

The young script frenzie site has a bunch of helpful tips on script writing: http://ywp.scriptfrenzy.org/nowwhatpage

Or google:
http://www.screenwriting.info/

http://www.wikihow.com/Write-a-Script

http://www.scriptwritingsecrets.com/