I clicked on "Promote" and it just gave me an affiliate link. No banner ad image links to use. Do I have create my own or does Clickbank provide them?
Clickbank is just Clickbank. The vendor provides stuff for you. It is completely up to the vendor on how much help he wants to give to his affiliates.
It is the vendor that gives you advertising materials including banner and email swipes... Often clickbank has a link to those advertising tools but sometimes it is even hard to get the affiliate url. Then make a search in Google like this "site:vendorproducturl.com" without the quotes which gives you all indexed pages of that domain then find the url that has affiliate or jv or similar and click it. There you can get the affiliate advertising info. This way you can even bypass the registering process of many vendor sites. But this works if the site is indexed by Google or others.
I think you should learn basics about clickbank if you want to use it and the best place for this is their actual websites.