Re: Where's the hara?
From what I understand, (and you'll have to take my comments with a grain of salt cause I haven't been practicing all that long), it is inside your body a couple of inches down and in from your navel.
If you're really wondering exactly wear, try shadow boxing some techniques and get a feel for it. Try and let your mind clear and it will slowly take shape in your mind. At least, I found that it worked for me.