I agree with Peachey. You can also find language partners, but I don't think it's a good idea, because I did so before but it's always difficult to maintain the language exchange.

You'll learn to walk by walking, you'll learn to love by loving at the same way you'll learn to speak by talking -UNKNOWN :D in short it's also depends on you.

You're not obliged to take a teacher here, but this site is one of the best places you can do so. :)

I think you will find a teacher will be able to instruct in structured way while the rest of us can provide ad hoc help.

* a structured way!