Just upload the story to the submission page, Set he codes and away you go. It's pretty explanatory. I would suggest lengthening the story a bit. That's the nice thing about the story site, as opposed to the Block - you can submit long stories there.

Dialogue -
Well, I hate the "he said"/ "she said" manner that so many stories get subjected to. Consequently I end up finding lots of different ways to say "he said"/"she said".

For instance, I use terms like "he issued", "he exclaimed", "he yelled", etc. I do this all over any first draft where there is a lot of dialogue. Then I go back and edit it. Inevitably, those things are over done and make the story sound ridiculous - 'cause there are way too many. So, I end up making a few more "he said"/"she said" sentences. I also break it up with all my different modifications of "he said"/"she said". The edit ends up finding a good flow and mix of the "said" situation.

So, my advice is to mix up the various ways you say it, add modifiers and various things that might sound stupid. Then edit it and make it less stupid. Then edit again and make it not stupid.

Muse, get your butt over here and give her your advice. Also, show me your tits.