Ok…it was kind of mean to post an aha moment without telling how to do what I figured out: If you want to create a post around the page you’re looking at, follow the instructions found here: Frequently Asked Questions » Blog Archive » Blog this! Link this!
What this page doesn’t tell you is that you get this nifty link that goes in your favourites. Say you’re looking at a page that you want to talk about in your blog, all you do is click on the link from your favourites and a wordpress dialogue box comes up and you write what you want. When you’re done, hit publish. Another nifty bit is that once you hit publish, you go back to your original page. Cool!