Styling the pages created by CoursePress

FYI: I had previously activated Marketpress and am using it for other products.

I'm just getting started with setting up my first course and when I looked at the preview, a page is generated on the fly. What I need to know is: can I style this page, including changing the sidebar, removing the comments section (like a blog page), and other general options available when I am on a normal page editor?

I have a few other general questions about Coursepress as well:

1. When I went through the checkout process, there was a place to enter a coupon code. Where does that get done?
2. Can the Paypal chained payment method work if I have a course set up on one of my subsites?

Thanks, Joe.