BANNER ADVERTISING:

Hi there,

The easiest (and most common) way to do advertisements is to hook up with an existing advertising company, such as Google AdSense. That way, they handle all the hard work, and just give you some code to paste into your site.

If you're planning on running the advertising yourself, you could create a CMS Builder section with the date range, image upload, and url you want it to link to. Or, you could get a third party banner ad script to manage things like clickthroughs.

But I'd strongly recommend going with an existing company like Google AdSense to provide you with ads & ad revenue, as this saves you from having to worry about managing the advertisers directly. :)