Featured Content, Featured Page Grid Content, and Featured Image Grid Content

Hello again, I may be just a little obtuse right now, but where are these features in the theme? I am trying to figure this stuff out to update my site and I cannot find them. My site is karenwhooley.com Also, where do I go to add code to the header? I know I saw it and now I cannot find it. I need to add code to allow my Popup form show.