How do I add static pages in oxid (and manage them)?

I would like to have several static content pages (no articles or categories, but still with the whole navigation and basket intact).

I have several questions regarding this:

How do you go about displaying a static page in the template (if the current page is static content and not a category list or similar, I want to remove the slider and some other things)?

I have several CMS-Pages that I use on the start page that have to link to this static content. Do I have to "hardcode" the link into these CMS-Pages or can I add some kind of tag that uses the id of the page (so that if I change the SEO URL, it will still work)?

Can I "group" CMS-Pages and iterate through them in the theme? I may have 1-n CMS-Pages of a particular "type" and want a CMS-Page that's added to this group to be automatically displayed on the start page. I also may need to make minor adjustments to the markup depending on the number of CMS-Pages in that group.