The blog is pretty but not yet functional

So I was proud to make my blog this pretty....but now I have no idea what I'm doing. I don't know how to allow comments....which we all know is one of the best parts to a blog. Also....what's a tagboard?....for now just email me if you know....since there's no place for comments :) . So it's still under construction and I realize there are many undone parts. I hope to figure it all out soon....anyone with great blogging knowledge...feel free to share some of it.