Okay, so I've been reading this
http://en.support.wordpress.com/menus/ It says I can display posts on different category pages. I made the menu. When I make a new post I see categories, but i don't see the menu I made that was supposed to split it into category pages. (Do these category pages show up in the top next to "Home"?--that's a side question not my main question)
When I put in the category, it's just a category, but not a category page.
So my question is, what is the step to put a post into a different category page? I'm using box of boom theme.
And I was able to make the menu as the instructions said.