I started backwards, with a novel. Many writers start with short pieces first, then work themselves up to larger works. In my haste to get rich quick, I assumed I could write a novel without any training, other than a degree in English Literature and lifelong love of reading. I can't blame this audacity on youth, because I was old enough to know better.
I began writing short stories when it became clear to me that getting stories published often led to getting other works published as well. I went to Indiana University's Writing Workshop in 2006, then Kenyon's in 2007 and 2008. My mentors Samrat Uphadhay, Brad Kessler, and Nancy Zafris taught me a great deal about short pieces, which in turn taught me a lot about crafting novels. Those workshops also helped me realize I was a writer, and that being part of a community was sublime.
I wrote short stories for a few years, had several published, found an agent, then concentrated on novels. In my experience, the most prestigious journals take a very long time to reject you. This is the primary reason I'm sharing stories now. You could call it streamlining, or immediate gratification. Or something else.
Stories will appear at least a couple of times a month. Keep checking back!