I am customizing coursepress Pro and I cannot get the Add

I am customizing coursepress Pro and I cannot get the Add To Cart to display on the main course page and how do I customize the “sign me up” button/text/size and the text that box displays

how do I customize the course detail page? The image displays too big

see here:http://careerfirebrand.com/courses/the-foundation-for-a-successful-job-hunt/