looking for comprehensive instructions for Affiliates plugin

I have looked at the Affiliates usage page and some of the questions others have asked about the use of the Affiliates plugin. Can you point me to any comprehensive threads of how to set up this plugin? I have too many questions, so I don’t want to bother you if these are answered already. Here are some of my questions:

1. Where are the banner (and button) image URLs? Or do we make our own?

2. I am using Marketpress. Where is the setting to designate the percentage of the product that will be shared?

3. What is the signup page for non-users and stand-alone installs?

Thanks for pointing me in the right direction.