Thank you both.
I don't have anything to market yet, although i have a few thousand years (ish) of a universe I've built over the last 3/4 year or so. That process is ongoing as I write; I probably have at least three or four times as much history and notes as story (enough that I am in the slow and tedious process of organizing into a local wiki).
I would love to think that something I've written is publishable, but I'm sure none of it is that good yet.
While I have read thousands of SF stories and books (mostly before this century, and most of them from the 80s and before), writing them is new to me.
My present goal is to finish one of the many books I have begun.
Most of the things I have completed are tiny vignettes within my Drywater, Mars universe.
I am not "normal" (am autistic) so the way I think and do things is different from most people (really, any that I have met so far). It is likely that the average reader will not follow my stories, or like them. But some are good, at their core, at least, even if I am still learning how to express them.
Unlike my technical things (and the worldbuilding behind the stories), the stories themselves are rather sparse in detail, because in my general experience with people, the kind of detail I would like to put in excessively slows down the reader and/or bores them.
Because of the way I think and experience the world, I cannot write from beginning to end, but instead must write each piece as it comes to me (even though I know generally what happens within the larger story).
Hopefully that is not too long a post, I shortened it as much as I could.