any advice on selling stories?

Can anyone give me advice on selling my stories? E-books, or whatever other format that works?

What's a good venue to sell them? Amazon? Here on Big Closet? Something else?

Is it possible to maintain privacy through a pseudonym?

How many sales does a decent story typically get? What's a typical price to charge?

I posted one story here (in chapters) ages ago. I have a new one nearly done, and loads of other ideas popping up. But money has become an issue, so if there's a way for me to bring in a small income by writing this kind of fiction, I'd jump at the chance.

And if it is inappropriate in any way for me to be asking these sorts of questions, please let me know and I'll find some other way to learn about the options.

Thanks!