If you are not so much into reading (yeah, as if...), then be sure to check out these video tutorials:
- Screenplay How To:
Bob Fritchey gives step by step insight into the process of developing a screenplay in short video clips
His website: http://www.screenplayhowto.com/
- The Script Code:
Rick Barretto goes into elaborate detail on some central script issues
His website: http://thescriptcode.com/
I don't knwo why these guys decided to stay off from YouTube, but their videos are interesting nevertheless. You won't learn really new stuff in them, but it is a good opportunity to refresh some basics.