I have changed this blog a bit. Every time I try to figure out how to do the hack for blogger "categories", my eyes glaze over (usually I only look at it after midnight hoping to get a few minutes' quiet to focus on it, so maybe my eyes are a bit glazed already by that time!).
So I decided to do my own categories fix by making sub-blogs for the different categories. Yes, they probably will overlap. But I need categories, I think. Look on the sidebar for the sub-blogs.