How do I have menu linked content not on main page?
When you create the Content, be sure to uncheck "Promoted to front page" in the option menu shown at the bottom, under Published options. See image.



If you want this option by default for a specific content type (for example, for Articles) you will need to go to Structure > Content types and edit that content type's Publishing options to uncheck Promoted to front page. This will become the default option when you create a new Article.