Please Help with Custom Template

I'm trying to create a custom template. I tired using the tmpl_uni folder but I don't understand how to find the names of section I want to change. Instead I tried using someone else's template and changing theirs but only parts of it is working.

Can someone please help me? I'm cracking!

website: networthclub.ajdynamics.com

I do not know if I understood correctly your problem, but when you are new of dolphin, the difficulty to building a template is find several HTML pages that comprise it.
I created a duplicate of UNI called, tmpl_comment, where for each html page, including modules, I have added a comment with the exact url of the page in this way are able to identify the individual pieces that make up the html template.