List main menu links I need a list of main menu item links to display on a page (sort of a sitemap). 
How would I accomplish this in Drupal 7?
Go to admin/structure/block and configure the Main Menu block

You want to go further you can Install Menu block module

So… have you ever used the Main and Secondary menu links feature on your theme and wondered “how the hell do I display any menu items deeper than that?”
Well, that’s what this module does. It provides configurable blocks of menu trees starting with any level of any menu. And more!