Code Help Needed! WordPress as CMS and Blog.

I would like to run my site as a CMS (and I’m using the Mimbo 2.2 theme, which does this). My index, root, home page shows selected articles of my choosing. But I’d also like to have a traditional blog a page titled ‘Blog’ that has all of my most recent posts. The problem is that the two pages are syncing up (don’t want them to) and I can’t get anything to post on the ‘Blog’ page.

I’m running WP 2.32, but this didn’t work on 2.31 either. I’ve looked through all of the relevant forum topics and documentation, and have not been able to figure out how to do what I’m wanting to do with WordPress. I’m a newbie, so dumbing down any advice or code instructions would be greatly appreciated.

So far, nothing has worked, here is what I’ve tried.
1. Tried running the front page as dynamic.
2. Tried front page as static with ‘blog’ as my posts page.
3. Added a blog.php file as suggested on the site documentation.

But nothing seems to work, and my site is in stall mode. Someone, please help me!