Add WordPress Blog Posts to Section of One Page Site

I have a parallax one-page xhtml template, Twitter bootstrap based. The initial thought was we didn’t want a blog/wordpress setup. That has changed. sorry this is still in local dev so I don’t have a link yet

I’m trying to avoid
-A separate page for the whole blog
-Recoding the site design to a theme
-Buying a theme
The goal is to have certain posts by category appear within divs on the single-page site and match the styling. We don’t care if the single posts appear in a new page as they don’t need the main site’s header or wordpress-based navigation.

So in theory, I would only need to style the posts to match the site style.

In my perusing the codex and searches I haven’t found a topic or tutorial that really covers this. May just be my poor understanding of what to search.

Is this something that is fairly moderate in effort? If anyone can point me toward some more clear information that would be great. I generally buy templates and massage them to need and am a mediocre code monkey at best.

Thanks in advance.