I may be in a bit over my head with this one. I'm building a site for a friend's business and I've designed it so that they can easily update the site without needing to know a lot about WordPress, HTML, or CSS. As such, the front page is a "static" page with a Loop that calls blog posts with the category "Homepage" - in this sense, they have a long, 1-page site with each section being its own post. It's working well, for the most part.
There are a few sub-pages that will take you away from this main page. One of them is the blog. What I'd like to do is highlight the 3 most recent blog posts (which are categorized as "Blog") on the homepage. I've read up on how to do this by adding another Loop, but my problem is that I need to add the code to a WordPress post, which doesn't seem to like the PHP needed for the Loop. Does this make sense? I can't figure out how to accomplish this. Any help is appreciated!