Personally I use Blogger, but from what I've seen of it Wordpress is probably just as good.
I used wordpress and i really liked it. i used xanga a long time ago, and this was head and shoulders above it. I can't remember exactly but i think there are 2 types of blogs within wordpress, one is simple and more user friendly, the other is a bit harder to use but you have a lot more options.
Personally, I would Google that one and do some research.