It should include training materials, information about campaigns, list of banners and other features.
With Post Affiliate Pro, you have a high level of flexibility for the affiliate panel. You can change both its design and content. This includes menu items, what content you want to have there, and even write your own content or link to some external pages. Here is how you can log in to affiliate panel of your affiliates easily to see what they see.
Find more about Customizing the affiliate panel.