Attaching Post to Specific Pages

Hello,

I have just set-up a new blog under the .org domain for WordPress.

However, I am experiencing some trouble with placing content under specific pages. I have at least five pages that now have all of the same content even though I’ve checked a specific box for the “category” in which I’d like the blog to fall under. Then there is the one page that has no content at all after I’ve sent more than one post there.

Please assist.