Waaaaay back in the day when I was first starting out, I used Sizzling HTML Jalfrezi, which helped me to learn the ins and outs of standard HTML code and its syntax. It has a very encyclopaedic (if very 1990's) way of presenting itself, though it's generally pretty dated by now. After all, it still talks about Netscape 4.
W3Schools is a great place to go for reference, though I'll be honest and say I haven't gone through any of their tutorials. They came along well after I had already learned my HTML.
If all you want to do is post your stories, why not look into a blog hosting service? It's a trade off between simplicity and customizability : if all you're looking for is a place to drop your stories and be done with it, I'd recommend going the easy route and customizing such a pre-built site with a little CSS and images. Otherwise, w3schools has an excellent reference section (as said by Runefox) for stylesheets and XHTML. Their tutorials are sometimes worded a little poorly, but often offer examples to clarify.