Hey Bruce,
Have you checked out our free The Events Calendar plugin? http://wordpress.org/plugins/the-events-calendar/ Downloading that and installing it might answer a lot of your questions. You are able to have as many other pages and menus as your theme will support, as that has nothing to do with our plugin. The Events Calendar will simply add it’s own page called Events that holds the calendar. To be clear, the calendar does NOT show up on the home page. (That’s possible, but it requires customization.)
Does that answer your questions?
– Julie