Making a post page

Im trying to set up a post page, where I can remove the sidebars because they arent needed, and also only adding specific posts to a certain page.
For example posts about Demon Outlaws to the Demon Outlaws page etc
For some reason I cant seem to do this, can anyone please help or have any ideas?

If some context is needed, I will be making progression posts on my game as time goes on, and rewriting the pages content each time seemed like a bad way to do it so i thought posts could be better.
http://lukedodds.co.uk/wip/demon-outlaws/