I got Final Draft 9 less than a year ago and I'm still not very comfortable using it. I started writing screenplays with a more inexpensive piece of software called Celtx and I found that to be pretty easy to use. Final Draft seems like a far more expanded version of Celtx in the way that a Photoshop Elements user might find the full blown version of Photoshop intimidating (which I do).
I found these tutorial videos on Youtube for Final Draft, but have not yet watched them. Once I do I can give a review, but I thought I'd at least share them so that anyone else that uses Final Draft (assuming you're not already an expert) can benefit as well.