HELP! What have you found to be the best way to post your fiction on here if you want to share your stories?

(Asking for a friend… I am that friend)

I write really, really weird erotic short stories. Paranormal, Why Choose Romance with shifters, Kinky Cozies, and Mid Life Travel Romance. What kinds of stories will thrive on Substack? How do folks organize books so it is easy for a reader to move through them? Help!