Well, you might look into platforms such as Archive of Our Own (AO3), which is great for various types of stories. Or, if you prefer a more professional setup, try pitching to literary magazines' online editions. Some well-known ones include The New Yorker and The Atlantic. Just make sure to read their submission guidelines first!
Well, there are several options. Amazon Kindle Direct Publishing is a great choice if you aim for commercial success. Another option is Royal Road, which is known for fantasy and sci-fi novels. Also, consider posting on your own website or blog to have full control over the presentation.
Well, there are several options. You could try Blogger or WordPress. They offer customizable templates and easy publishing tools. Also, some literary websites like Figment or Scribophile might be suitable, depending on your genre and style.