As for 1. Not entirely sure, the submission process has never been a major focus on my part, but I seem to recall the uploading function on the galleries being down? But there is the art forum and space tavern for things like art and jokes, respectively.
2. You open up Microsoft word/notepad/word perfect and just start typing away. Then you can post it up in the Fiction forum.
3. We do in fact have an RP board, scroll down a bit, all is explained upon entrance.