It doesn't hurt to ask if you already looked, but have at the link under the board FAQ "so you want to be a writer" then "how do I find my readers" in the next section. You'll find a few suggestions there along with some off tangent blather.
The more you can tell us about your fiction, and about your writing skill level, the better. Even if you're pushing just some sexy exploration of fan-shlick-fiction. There is an astonishing variety of niche sites catering to specific genera, yet the final arbitrator of where to go is mostly your skill level.
If you are trying to go full on professional, it's pretty much a combination of Amazon linked to your own personal website blog. That is, if you know how to run your own marketing campaign. Otherwise, you need a traditional publisher. Either way, prepare to embrace failure as a way of life for the foreseeable future. Which, by the way, is an argument in favor of trying, not against.