split custom post into different pages w/page numbers


Somehow I lost some customization for this page. Right now the testimonials on the page scroll down and down. I would like to have these separated into pages with page numbers at the bottom; i.e. 15 testimonials per page, and so that it automatically with add another page number when there are over 15 testimonials.

Could you please help me fix this?

url: http://tinyurl.com/krv4qam