Here's a site I have used sparingly. It's called Livemocha. It's a community of folks helping each other learn different languages. The best part is, it's free! I really haven't tried their Korean lessons yet but I have met a few Korean friends their who have been helpful with teaching me Korean. In turn, of course, I teach them a bit of English. The best way to learn from one another is to use Skype and get a recording program so you can review your conversation later. That is, unless you can meet in person which is a HUGE advantage. Try this site out and let me know what you think.