If you like reading SF stories, you may be used to reading them online at scifi.com
. It has original and classic fiction, and is a brilliant resource. Alas it is to be discontinued, though I'm not sure whether that means it will completely disappear - it will be around for a few more months at least, even if it won't be updated.
If you don't know where to start here are links to the favourite stories of Abigail Nussbaum
and Gwenda Bond
(a longer list) and recommendations by secritcrush
on the shortform
Here is the complete archive
I rarely remember the stories I like, but I will always recommend The Heat Death of the Universe
by Pamela Zoline.